trek fuel ex 8 comparison

Trek Fuel EX 8 review – still one of the best trail MTBs?

Trek’s alloy fuel ex trail mountain bike lacks the latest features but is the overall package still a winner.

Bike Perfect Verdict

Heavy frame that misses the latest features but still a great package for fast and precise all round mountain biking

Tight, precise frame

Sorted all round handling

Very efficient suspension feel

Durable Shimano kit

Excellent sizing options

Heavy frame

No internal storage

Press fit bottom bracket

Top Fuel is more playful

Why trust BikePerfect Our cycling experts have decades of testing experience. We\'ll always share our unbiased opinions on bikes and gear. Find out more about how we test.

Trek’s Fuel EX has been one of the best mountain bikes in the world for years, but the alloy-framed 8 is lacking some of the features the latest alloy and carbon Treks. High-durability component spec matches the vibe of a really well-balanced bike. One that plans ahead, hands its homework in early (having double checked it) and rarely puts a wheel wrong or goads you into being silly yourself. So how has Trek done that and is there a better option in the range if you want something short on travel but big on fun?

Design and aesthetics

Trek has been using a rocker link-driven, vertical shock suspension design on its bikes for so long that “Looks like a Trek Session” is a cliche on most MTB forums. No surprise then that the Fuel EX continues the clean looks which leave plenty of room for a big bottle on the down tube and strap-on storage. You don’t get the internal storage of the newer Top Fuel alloy frame though and this older frame still uses a press-fit bottom bracket rather than reverting to a more reliable threaded  format. There are ISCG chain keeper tabs on the BB though, a wider-angle Knock Block steering limiter to stop bars hitting the frame in a crash and rear axle concentric ABP rear suspension pivot. Cunning zip tie tabbed ‘Control Freak’ internal cable routing and rubber frame armor including molded chainstay sleeves keep things quiet. 

You also get the 0.5-degree geometry change ‘Mino Link’ flip chip at the seat stay/rocker pivot. That changes head angle from 65.5- to 65-degrees and effective seat angle from 75.5- to 75-degrees on the Large I tested. Reach also shifts from 475 to 470mm and BB height drops from 346 to 340mm. The big win with choosing a Trek though is the sheer range of sizes from XXS to XXL including a sweet spot ML in the centre. Smaller bikes also run 27.5in wheels for proportional balance, too, although the chainstays are the same length on all frame sizes. The Fuel EX 8 is also available in three different two-tone color options.

Specification

Trek acknowledges that the ‘priority is on the parts’ with the EX 8 and the highlight is an almost complete Shimano XT drivetrain (the chain is SLX). The Fox Float shock is a custom unit, too, using a Penske race car derived RE:aktiv damper setup for a pert-pedaling feel on top of the 130mm travel. The 140mm Fox 34 fork is the stock Rhythm spec though and the Shimano brakes are basic four-piston MT400s. Bontrager’s functional Line component range completes the bike in well-judged, size-specific cockpit options although dropper post strokes are short on the larger sizes. Big volume versions of Bontrager’s XR5 and XR4 tires on Bontrager Line Comp 30mm internal rims put plenty of air between bike and trail for protection, too.

Performance

While the EX8 isn’t light at just under 15kg (a full kilo heavier than Trek claims) it’s in the ballpark for a mid-travel, alloy-framed bike at this price. What really stands out is how well it hides that weight when it comes to pedaling. The big tires don’t drag nearly as much as they look like they might, while the RE:aktiv shock and overall kinematic give it a really clean, crisp and stable platform to put down power from. That means even with three potential low-compression settings to play with, we rarely felt compelled to flick it out of full open unless we were hoofing uphill out of the saddle. Add the clean shifting, top-quality Shimano XT drivetrain and the Fuel EX is a great choice for high-mileage rides and riders. The fast-engaging ‘Rapid Drive’ freehub and relatively high ground clearance are a bonus for anyone who likes to kick hard out of corners or attack rough technical climbs, too. The efficient suspension feel still gives enough sensitivity to track the ground under power and you can drop pressures in the big tires if you’re into a proper ‘crawler/swamper’ feel. 

The 140mm fork/130mm rear travel feels well balanced on the trail and the Grip damper Fox Rhythm repeatedly proved why its our favorite cost-effective fork. Trek’s suspension calculator is accurate enough to get most people sorted on set-up for most situations. The angles and proportions of the model we tested were confident at speed on jumps but still turned in promptly on woodland twisters. Even the basic Shimano brakes feel better than normal through the neutral suspension responses created by the ABP pivot and the 200mm rotor up front boosts power, too.

While you could speed up reactions with a shorter stem, the stock setup probably suits its overall character better. That’s because while it will pop and play off trailside opportunities if you’re in the mood, it does tend to sit on top of an already relatively high ride height rather than sucking down onto the trail and railing. Interestingly that’s a big - and counter intuitive - difference to the Top Fuel 8. With slightly steeper angles, less travel, significantly different suspension kinematic and top-spec RockShox rear shock, Trek’s pocket rocket has an addictively playful charisma that’s very much at odds with it’s ‘XC’ categorization. 

In fact, despite it being heavier we’d probably opt for the Fuel EX for long marathon-style or efficiency-based events, especially as it’s significantly cheaper than its little brother, leaving you more cash for race entries and energy products. Just make sure you keep an eye on the press-fit bottom bracket and get it replaced as soon as it shows any signs of wobble/creak as that can eventually creates frame issues.

Trek’s Fuel range might be a bit backwards when it comes to assigning categories based on travel but the main thing is that the Fuel EX is still a really efficient, enjoyable and fitness/skill flattering all rounder. While it misses out on the internal storage, threaded BB and super-plush playfulness of the Top Fuel, Shimano XT will always bring a lot of hard riding boys (and girls) to the yard. Those are exactly the riders who’ll appreciate just how well this extremely well balanced bike covers ground and keeps a fresh and sharp feel long into the day, and down tough technical sections, too. 

Tech Specs: Trek Fuel EX 8 XT

• Price: $3,929.99 / £3,200
• Discipline: Trail
• Head angle: 66/66.5-degrees
• Frame material: Trek Alpha Platinum Aluminum
• Sizes: XS, S, M, M/L, L (tested) XL, XXL
• Weight: 14.9kg
• Wheel size: 29 x 2.3in
• Suspension (front/rear): Fox Rhythm 34, Float EVOL 140mm travel, 44mm offset/Fox Performance Float EVOL, 3-position RE:aktiv 130mm travel
• Components: Shimano XT 10-51T, 12-speed gearing, shifter, chainset and cassette. Shimano SLX chain. Shimano MT400 brakes with 200/180mm rotors. Bontrager XR4 Team Issue 29 x 2.6in front and Bontrager XR5 Team Issue 29 x 2.5in rear tires on Bontrager Line Comp 30 wheels. Bontrager Line 780 x 35mm bar and 50 x 35 mm stem, Bontrager Line Dropper 150mm dropper post, Bontrager Arvada saddle

Guy Kesteven has been working on Bike Perfect since its launch in 2019. He started writing and testing for bike mags in 1996. Since then he’s written several million words about several thousand test bikes and a ridiculous amount of riding gear. He’s also penned a handful of bike-related books and he reviews MTBs over on YouTube.

Current rides: Cervelo ZFS-5, Specialized Chisel, custom Nicolai enduro tandem, Landescape/Swallow custom gravel tandem

Height: 180cm

Weight: 69kg

• Guy Kesteven Technical-Editor-at-Large

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Trek Fuel EX 8 Gen 6 review

Does Trek's sixth-generation trail flagship live up to the hype?

Great frame, with perfect handling and suspension feel; adjustable geometry and sizing options mean a bike fit for all; happy on any level of trail

Cockpit harshness; mediocre tyres; poor brakes; expensive

The Trek Fuel EX 8 Gen 6 is part of the sixth generation of the US brand’s flagship trail-bike family, launched in 2022. It went live hot on the heels of the aesthetically similar, but motor-assisted Fuel EXe bike.

The Fuel EX family offers 140mm of rear-wheel trave l, paired with 150mm forks, and is targeted at more aggressive trail bike riders. The bulk of the bikes are offered with 29in wheels , the XS frames have 27.5in wheels, while those looking at size-small bikes get the pick of both sizes.

One of the most adjustable bikes on the market, the Fuel EX offers two geometry adjustments, as well as suspension adaptability and mullet compatibility. With an expansive range, covering alloy and carbon models, there are bikes for many pockets.

This EX Gen 6 sits at the top end of the alloy range, and while the spec list isn’t dripping in top-end kit, the selection of parts suggests solid performance should be expected.

Trek Fuel EX 8 Gen 6 frame and suspension

The frame uses Trek's Alpha Platinum aluminium, which is butted and hydroformed into the tube shapes the brand desires.

The down tube features a storage port, into which tools, snacks or pumps can be stashed, situated under the bottle cage.

Under the tube is a two-piece rubberised bolt-on protection strip to keep the frame safe. It extends the length of the down tube, which is great to see.

Threaded bottom bracket shells will appeal to home mechanics, while there are ISCG05 mounts around the shell too.

Thick rubberised protection keeps the rear triangle running quietly and the paint chip-free.

A wide 34.9mm seat tube means large-diameter droppers are fitted - a boon when it comes to durability.

Trek uses its ABP (Active Braking Pivot) suspension linkage on the Fuel EX. This places the rear pivot concentric to the rear axle (rather than on the chainstay or seatstay, as on most suspension systems ).

This, Trek says, separates braking forces from the suspension’s action. The idea is that suspension remains active while braking.

Normally, the torque applied to the seatstay by the brake during braking interferes with the suspension, hampering the wheel’s ability to track the ground while slowing down.

Trek says the seatstay, which floats between the rear pivot and the rocker link, separates the two competing forces.

The suspension linkage features a two-position lower shock mount on the frame (the ‘Progression Chip’), enabling you to run a more progressive leverage curve, offering improved bottom-out protection, or the ability to run a coil shock , which is more linear than a standard air shock.

This feature should appeal to more aggressive riders.

Trek Fuel EX 8 Gen 6 geometry

Trek has given the Fuel EX plenty of adjustability in terms of the bike’s geometry.

The MinoLink has been seen on numerous Trek bikes. This flip chip in the suspension rocker gives Low and High settings, altering head and seat angles by 0.5 degrees. It also alters the BB height by 8mm.

There are also three headset options – Slack, Neutral and Steep. In Slack (and MinoLink in Low), this offers adjustment from 63.5 degrees to 64.5 degrees (Neutral) up to 65.5 degrees in Steep. There's minimal impact on other areas of the bike's geometry.

Bikes ship with the Neutral headset (and the bike is tested here in Neutral), with a rotatable headset cup available aftermarket, offering the Slack and Steep options.

Finally, in terms of adjustability, if you stick the bike in the Steep setting with a 160mm fork, the Fuel EX can be run as a mullet bike , with a 27.5in wheel in the back.

Overall, the geometry is very modern. Reach figures are long, the head angles are slack and the seat tube angles are steep, at around 78 degrees.

Chainstay lengths alter with size, too, ranging from 435mm to 450mm across the (impressive) eight sizes on offer. These go from XS to S (27.5 or 29in), Medium and Medium Large, Large, XL and XXL.

Trek Fuel EX 8 Gen 6 specifications

At £4,350, it’s fair to say the EX 8 doesn’t offer the best value around. However, many of the spec choices are solid, and the alloy chassis is great.

Suspension comes from Fox , in the shape of a Rhythm-level 36 fork with 150mm travel. This comes with the basic GRIP damper, which has a lockout dial on the top of the fork and low-speed rebound adjustment at the bottom.

At the rear, there’s a Float X shock, in its Performance flavour. This has a piggy-back design, giving it a higher oil volume, which in turn improves performance consistency on long descents.

The Performance level largely means there’s less adjustment than its pricier siblings, but you still get a lockout lever.

The drivetrain is a mix of Shimano XT, SLX and Deore, as well as an e*thirteen 9-50t cassette. The brakes on my test bike are the new mineral-oil based DB8 brakes from SRAM, with 200/180mm rotors. Some bikes may come with M6100-level Shimano brakes, though.

Bontrager (Trek’s in-house parts brand), provides the bulk of the finishing kit, from the cockpit to the saddle, as well as its Line 30 Comp wheels, and mid-aggressiveness XR5 Team Issue 29x2.5in tyres.

Trek Fuel EX 8 Gen 6 ride impressions

This bike was tested as part of our 2023 Bike of the Year test. It was compared to seven of the best trail bikes , listed later.

I took all the bikes to the same locations and trails for some dedicated back-to-back testing on a wide variety of terrain.

From hand-dug tracks in the woods to trail-centre laps and BikePark Wales’ rocky runs, I ensured the trail bikes were exposed to every type of trail such a bike is likely to be ridden on.

Riding the bikes back to back, usually with four in each testing session, ensured I was able to pick out the finer performance points of each one.

Trek Fuel EX 8 Gen 6 climbing performance

The Fuel EX does a solid job when the trails start to ascend.

The seated position is excellent, with a steep seat angle putting you right where you need to be over the cranks when the front wheel is higher than the rear.

When your weight shifts rearward, the suspension doesn’t seem to squat much, either, so the seat angle rarely dips from its steep position too much.

Seated, the suspension is as good as solid when pedalling, with minimal movement of the shock under regular pedalling loads, leading to an efficient feel. The SE5 tyres roll fairly fast, thanks to their low tread height.

Stand up, and you can get the suspension bobbing about, but it doesn’t feel as wallowy as many in this situation, and the lockout lever is within easy reach on smoother drags.

Get to a step up in the trail and the suspension stays static as the rear wheel crests the ledge. Traction on slippery roots from the SE5 rubber could be better too – though the trade-off would likely be some rolling resistance.

When stood, you get the first impression that the chassis is stiff – there’s no spaghetti feeling as you put power through the cranks, and the whole setup feels, simply put, solid.

Despite all this, it’s not the fastest climbing bike ever. It has a reassuringly composed feel, rather than light and flighty, and during testing I never really felt myself being egged on to ramp up the watts to get up the hill faster. It’s a bit of a sit and spin bike.

The Shimano drivetrain is good, with Trek speccing a largely XT groupset. Cassette specs seem to vary, like the brakes, with e*thirteen (as I have) and Shimano SLX being listed.

The e*thirteen’s shifting performance isn’t quite as slick as a Shimano alternative in my experience, but does feel a little quieter when the drivetrain is covered in grit and grime, compared to Deore/SLX cassettes.

Trek Fuel EX 8 Gen 6 descending performance

The solidity that was evident on the climbs is almost more so on descents. Trek has made a super-stout chassis that gives the Fuel EX an impressively composed feel on the trail.

It is almost unshakeable, pretty much regardless of the terrain.

The suspension doesn’t have a light, flighty feel, but is nicely damped, offering buckets of traction, whether you’re on the brakes or not, and provides ample isolation from the minutiae detail of the trail, without leaving you feeling entirely disconnected from it. Lighter riders may well find the shock over-damped.

On big hits, after a slightly harsh entry into its travel, the shock is controlled, with a smooth transition towards the bottom of its travel, avoiding any nasty clunks as the shock bottoms out. This is in the normal rather than more progressive shock setting too.

In this, I struggled to get through all the travel, suggesting it may well work better with a coil shock (which is, by its very nature, less progressive at the end of its stroke).

Drop the bike into a corner, and the chassis doesn’t flex, pushing your weight straight onto the tyre’s shoulder in a reassuring manner, and communicating exactly what’s happening through the rubber. It carves corners beautifully.

Fire it through some janky rocks, and the bike seems to shrug off any attempt to push it off-line and you into trouble. It doesn’t display full monster-truck tendencies, but it’s certainly a bike that feels happy being pointed somewhere in the distance and then allowed to get there in as straight a line as possible.

It’s a similar story on rolling trails, too. The suspension enables you to push and pump the bike through undulations, gathering speed, avoiding feeling like you’re trying to compress a marshmallow. Turn the pedals and you’re projected forward with ever-increasing speed.

It even displays ample levels of agility, too – want to add a few air miles to your account? There’s support there to boost off a lip. Keen to whip the rear wheel round a tight bend? It’ll drop its shoulder and scrabble its rubber round when required.

With a 485mm reach (large) and 64.5-degree head angle, the Fuel EX should excel on steep tracks, especially because the Fox Rhythm 36 has a similarly stout chassis and ample support when needed.

However, you do need to trust both the brakes and the tyres in this situation.

The new SRAM DB8 brakes didn’t impress me in testing. They feel wooden through the lever, with a disconnected lever feel, and their power levels are down on both the SRAM G2 and Shimano’s similar offerings.

Given Trek lists both the DB8 and Shimano M6100-series brakes on its spec list, given the choice, I’d opt for the Shimano stoppers.

While I’ve been relatively complimentary of the tyres so far, their performance is outshone by Maxxis tyres on other trail Bike of the Year bikes.

The tread depth is low, and so in sloppier conditions they don’t have the same bite. The slightly more rounded profile means the shoulder tread doesn’t engage the dirt as effectively as other tyres might.

Compared to Maxxis’ 3C MaxxTerra rubber and EXO+ casing , these tyres can’t compete. They ping over rocks more and have less traction on damp rocks and roots.

Early testing on the loam, mud and roots of the forest left me impressed. But later trips to the high-frequency rocky chatter of BikePark Wales revealed the Trek’s other weaknesses – the stiff frame, Line 30 wheels and oversized bars.

These combined to transmit a whole lot of buzz straight to my hands. Add in under-powered brakes, and arm fatigue was an issue on prolonged rocky descents.

How does the Trek Fuel EX 8 Gen 6 compare to the Merida One-Forty 700?

Trek and Merida each launched great new trail bikes in 2022. Both have clearly concentrated on the quality of their chassis, and target the trail rider who doesn’t want descending performance to be compromised.

The Trek has a very assured feel – it’s calm, composed and really easy to ride. It’s agile and communicative too.

The Merida (in the Long size that I tested) is radical in its shape, and climbs exceptionally well. It has a touch more pedal feedback, but both will tackle steep tech with ease.

Merida pips the Trek, though, thanks to its better tyres and cracking value for money. It’s over £1,000 cheaper, and other than the single-can shock, rather than piggyback, I can’t see where it loses out spec-wise.

Trek Fuel EX 8 Gen 6 bottom line

The Fuel EX is undoubtedly a great trail bike, and very nearly made it into my top three for this Bike of the Year category.

It was the rockiest tracks that separated the best from the rest, though, and the stiff front end, as well as questionable value, squeezed the Trek off the podium.

It’s a bike that best rewards an aggressive, rather than passive, riding style.

Treat it right (and maybe get lucky with the brake specs) and you won’t be disappointed by the Fuel EX.

Trail Bike of the Year 2023 | How we tested

This bike was ridden as part of our 2023 Bike of the Year test. It was compared to seven of the best trail bikes .

From hand-dug cheeky tracks in the woods to trail centre laps and Bike Park Wales' rocky runs, I ensured the bikes were exposed to every type of trail such a bike is likely to be ridden on.

Riding the bikes back to back, usually with four bikes in each testing session, ensured I was able to pick out the finer performance points of each one.

Our Trail Bike of the Year contenders

• Cannondale Habit Carbon 3
• Cotic Jeht Mullet Silver SLX
• Marin Rift Zone 27.5 XR
• Merida One-Forty 700
• Trek Fuel EX 8 Gen 6
• Vitus Escarpe 29 CRS
• Whyte T-140 RS 29
• YT Jeffsy Core 3

Thanks to...

Thanks to our sponsors Crankbrothers , FACOM Tools , MET helmets , Bluegrass Protection , Supernatural Dolceacqua , Le Shuttle and BikePark Wales for their support in making Bike of the Year happen.

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Trek Fuel EX 2023 Review | A bigger, musclier & hugely adaptable trail bike

The not-so-minor details.

2023 Trek Fuel EX

https://www.trekbikes.com

$4,999 AUD - $8,999 AUD

- Sturdy, flex-free chassis - Superb geometry with adjustable head angle - Efficient & comfortable climbing performance - Coil shock, big fork & mullet compatibility - Mechanic-friendly frame furnishings - Internal storage

- Frame is on the heavy side - Rear shock tune lacks small-bump suppleness - Rattly rear thru-axle lever

Wil reviews the Trek Fuel EX 2023

Having undergone a ground-up redesign for 2023, the Trek Fuel EX has entered its burliest and biggest travel form yet. This latest model represents the 6th generation of Trek’s popular mid-travel trail bike, with the original having debuted all the way back in 2005. Trail riding has evolved a lot since then, and the new Fuel EX aims to keep up with that evolution by incorporating almost every mod-con you can think of.

Of course it’s big news whenever Trek releases a new Fuel EX, and given how important this bike is for the US brand, we were curious to see how the raft of updates would play out on the trail. We had a bit of an idea, having thoroughly enjoyed riding the electrified Trek Fuel EXe over the past few months. Would the muscle-powered version deliver the same good vibes? And how would it compare to the previous models that have given us so many fond riding memories over the years? We’ve been putting the Trek Fuel EX 2023 to the test to find out!

Watch our video review of the Trek Fuel EX 2023:

Along with the downtube storage, generous frame armour and size-specific chainstays, the Fuel EX appears to pack in almost everything you could possibly want in a modern trail bike.

An overview of the Trek Fuel EX 2023

For 2023, the Trek Fuel EX is built around an entirely new frame that’s produced in carbon and alloy variants. Suspension travel has increased by 10mm at both ends, with the new Fuel EX now sporting a 150mm fork and 140mm of rear travel via the ABP four-bar suspension design.

It’s worth noting that the frame will handle a 160mm travel fork, and thanks to the two-position Mino Link, it can also be run as a mullet. Borrowed from the Session downhill bike, there’s a two-position flip chip at the lower shock mount that offers linear and progressive settings. The latter option is what makes the new Fuel EX coil shock compatible.

On top of that, Trek will be offering aftermarket headset cups to steepen or slacken the head angle by a degree. Along with the downtube storage, generous frame armour and size-specific chainstays, the Fuel EX appears to pack in almost everything you could possibly want in a modern trail bike. It’s certainly an appealing package on paper, and one that’s ready to take on contemporaries like the Specialized Stumpjumper , Merida One-Forty , Canyon Spectral and Giant Trance X .

Trek Fuel EX price & specs

There are a number of different models available in the Trek Fuel EX 2023 lineup, though availability will vary depending on where you are in the world.

In Australia, prices currently range from $4,999 AUD for the Fuel EX 7, and go up to $8,999 AUD for the Fuel EX 9.8 XT model. The cheapest option is actually the Fuel EX 5, though that model carries over the previous generation frame. For a closer look at the specs, prices and all the new details, check out our Trek Fuel EX 2023 overview article for more.

Here we’ll be diving into our experience of testing the Trek Fuel EX 9.9 XX1 AXS model, which will be available in Australia in limited quantities through the custom Project One bike builder. It’s a media bike that was provided to us by Trek, and of course it comes dripping with lots of gold, carbon and wireless bits. However, as usual with our reviews, we won’t be going into detail about the Gucci-level spec. Instead, we’ll be concentrating on the important aspects that are shared throughout the Fuel EX lineup; the frame design, suspension performance and its on-trail handling.

2023 Trek Fuel EX 9.9 XX1 AXS

• Frame |  OCLV Mountain Carbon Fibre, ABP Suspension Design, 140mm Travel
• Fork |  Fox 36, Factory Series, GRIP2 Damper, 44mm Offset, 150mm Travel
• Shock |  Fox Float X, Factory Series, 185x55mm
• Wheels |  Bontrager Line Pro 30, OCLV Carbon Rims, 29mm Inner Width
• Tyres |  Bontrager SE5 Team Issue 2.5in Front & Rear
• Drivetrain |  SRAM XX1 Eagle AXS1×12 w/30T Crankset & 10-52T Cassette
• Brakes |  SRAM Code RSC 4-Piston
• Bar |  Bontrager RSL Integrated, OCLV Carbon, 27.5mm Rise, 820mm Width
• Stem |  Bontrager RSL Integrated, OCLV Carbon, 45mm Length
• Seatpost |  RockShox Reverb AXS, 34.9mm Diameter, Travel: 100mm (S), 150mm (M-M/L), 170mm (L), 200mm (XL)
• Saddle |  Bontrager Arvada, Austentite Rails
• Confirmed Weight | 14.4kg
• RRP |  $TBC

The chassis feels near-bombproof, and combined with the supportive suspension, powerful brakes and high volume rubber, you’re served up plenty of confidence for pushing the front wheel into steep chutes and over technical A-lines.

Trek Fuel EX size & geometry

From X-Small through to XX-Large, the Trek Fuel EX is produced in no fewer than seven different sizes. Seven! Given that many brands only offer four or sometimes even just three frame sizes, that’s impressive.

The two smallest sizes feature 27.5in wheels, while the Medium and above come standard with 29in wheels. The Small is the only option that is available in either wheelsize.

At 175cm tall I’ve been riding a Medium, which features a 450mm reach. Thanks to the use of short seat tubes, a rider of my height could easily upsize to the M/L size to get a longer 470mm reach. Personally, I’ve found the fit of the Medium to be spot-on.

As for geometry, the Fuel EX features a 64.5° head angle and approximately a 77.5° effective seat tube angle in its stock configuration. The rear centre length varies between sizes, going up to 450mm on the largest frame. On the Medium I’ve been riding, the rear centre is a compact 435mm.

Coming off the Fuel EXe, I found it easy to settle into the Fuel EX. The only modification I needed to perform was to chop the comically wide handlebars from 820mm down to a more reasonable 780mm.

Suspension & tyre setup

Getting the Fuel EX set up is made easy thanks to Trek’s detailed online suspension calculator . Input the bike model and your riding weight, and out spits suggested air pressure and rebound settings for both the fork and shock. It even suggests tyre pressures, giving you a good place to start before hitting the trail. When brands like Canyon struggle to provide any recommendations at all, Trek should be commended for helping riders to get the most out of their bike.

For my 68kg riding weight, Trek suggests setting up the Fox 36 fork slightly softer and slower than usual. Recommended rear shock sag is 29%, and the calculator’s suggestion of 158psi got me to exactly that figure. Initially I set the rebound at 6/15 clicks as recommended, but while everything felt quite balanced front to back, the suspension was a little sluggish and duller than I wanted. Speeding up the rebound by a couple of clicks in both the fork and shock helped to make the whole bike feel a bit more lively, while improving small-bump reactivity.

Although the Bontrager SE5 tyres feature reinforced Core Strength casings, I still fitted a CushCore Pro insert to provide some additional pinch-flat protection and insurance for the carbon rims. Tyre pressures were set as per Trek’s recommendations with 20psi in the front and 22psi in the rear.

Trek Fuel EX weight

Confirmed weight for our Trek Fuel EX test bike is 14.4kg. That’s with the tyres set up tubeless, but without the CushCore insert or pedals.

It’s on the heavier side for a high-end carbon trail bike, though the 2.5in tyres, stocky carbon wheels and AXS components aren’t exactly the lightest going. Of course weights do vary throughout the Fuel EX lineup depending on the spec, and you can see the weights for all the different models in our range overview .

A contributing factor to the overall weight is the new frame, which has gained almost 700g over its predecessor. Trek claims the carbon frame weighs 3.4kg with the rear shock, making it a bit of a porker alongside some of the competition;

• Scott Genius HMX Carbon: 2,249g
• Specialized Stumpjumper Carbon: 2,280g
• Giant Trance X Advanced Pro 29: 2,498g
• Specialized Stumpjumper EVO Carbon: 2,750g
• Canyon Spectral CF: 3,047g
• Trek Fuel EX Carbon: 3,400g

The new alloy Fuel EX frame is heavier again, coming in at a hefty 4.6kg with shock.

Of course weight isn’t everything, and it’s unsurprising that the new frame has gotten heavier given how much longer and slacker it is. Still, for those who are especially concerned by grams, there are certainly lighter options on the market.

What do we dig about the Trek Fuel EX 2023?

With its added heft and updated geometry, the Trek Fuel EX 2023 is no doubt the burliest iteration yet. The chassis feels near-bombproof, and combined with the supportive suspension, powerful brakes and high volume rubber, you’re served up plenty of confidence for pushing the front wheel into steep chutes and over technical A-lines.

Indeed it’s massively capable for a 140mm travel bike, with the slack 64.5° head angle and roomy wheelbase giving it a purposeful stance on the trail. The geometry is superb, with welcome updates that have brought the Fuel EX right up to speed.

The steeper seat angle is particularly noticeable over the old bike, providing a much improved seated position on steep climbs. Pedalling efficiency has also levelled up. Trek has lifted the main pivot above the chainring to increase anti-squat, which helps to reduce pedal-induced bobbing. The Float X shock has a two-position climb switch, but I never once needed to use it while riding off-road since the rear end is so well behaved.

It rips through the turns

Once up to speed on flower singletrack, the taut chassis means the Trek Fuel EX is highly responsive when rounding corners and pushing into berms.

With its boxy downtube, split top tube and the supporting strut for the lower shock mount, the front triangle is heavily braced to resist torsional flex. Along with the wide main pivot and boxy one-piece chainstays, the Fuel EX possesses a strong spine from its shapely head tube to the rear thru-axle. The muscly frame effectively translates handling inputs while resisting lateral deflection through the turns.

Likewise, the short rear end and generous 38mm BB drop are fantastic when threading your way through twisty sections of trail, keeping you connected to the terrain and contributing to the playful ride quality. The low-hanging BB did mean I caught the pedals occasionally, so those who frequent off-piste terrain and technical climbs will want to consider flipping the Mino Link into the High position to indulge in an extra 7mm of pedal clearance.

Otherwise the riding position and weight distribution are totally sorted. The handling is approachable, and the Fuel EX doesn’t demand a whole lot from you as the rider. Compared to the old bike it does need a more concerted lean when entering tighter corners, though this is a part of the natural evolution of modern trail bike geometry. Even if you’re coming off a 5-year old bike, you’ll only need a few rides to get accustomed to the Fuel EX’s steering behaviour.

Trail-tweakable

In addition to the Mino Link, we’ve also been experimenting with the lower shock flip chip on the Trek Fuel EX. Requiring just a single 6mm hex key, it’s a quick adjustment to make trailside, and the change in suspension behaviour is noticeable.

I ended up preferring the ‘Less’ setting, which provides a more linear leverage rate. With the shock set at the recommended sag, this position provides great pedalling support, along with more comfort and activity deeper into the stroke. There’s still a good deal of progression though. Combined with the large bottom-out bumper in the Float X shock, hitting full travel proved to be a well-controlled affair.

One of our fellow testers, who generally spends more time in the air than on the ground, preferred riding in the ‘More’ setting. This increases progression, providing a stronger ramp-up in the latter half of the travel. He also reduced the shock pressure by 5psi to further enhance small-bump compliance, while still being able to enjoy the additional big-hit support. Pedal efficiency isn’t as stable in this setting, but it does mean the Fuel EX takes to jumps like a duck to water, popping off lips enthusiastically and absorbing hard landings with a solid and flex-free touchdown.

One thing to note on the More/Less flip chip is that while you are altering the progression of the air spring, you’re also affecting the damper too. As well as adjusting air pressure, we found we needed to tweak the rebound and low-speed compression settings between the two positions. It is indeed a useful tuning tool, but it doesn’t dispel the need for air volume spacers entirely.

What does it struggle with?

With the Trek Fuel EX adopting a beefier frame, the added weight is noticeable compared to lighter bikes in this category. That’s compounded by the heavy-duty brakes, stocky wheels and chunky tyres, which mean there’s more inertia to overcome during micro-accelerations on an undulating climb.

For those who are looking for a sharper and sprightlier trail bike to whip through the trees along smoother singletrack, the latest Trek Top Fuel will be a better fit. In comparison, the new Fuel EX is a burlier beast that thrives on steeper and more technical terrain.

Curiously, it does feel stiffer than the electrified version, the Fuel EXe . Despite both our test bikes featuring carbon frames with a near-identical build kit, I’ve found the Fuel EX to transmit more trail feedback.

Some of this may be due to structural differences, and perhaps the more favourable sprung-to-unsprung mass ratio on the electric version thanks to the added weight of the motor and and battery. Either way, the Fuel EX doesn’t exactly exude off-camber compliance. As a lighter rider on very rocky terrain, I’ve found myself getting knocked around a little more than I would like.

This sensation reminded me of the Canyon Spectral 125 , which proved to be overly stiff and quite uncomfortable at slower riding speeds. The Fuel EX is more compliant overall than the Spectral 125, but it’s still pretty stiff.

It’s not as supple as Fuel EX models gone by

Contributing to this sensation, the suspension isn’t as plush as previous Fuel EX models, particularly those that featured the Thru Shaft shock. Those bikes did require the rider to make use of the compression lever to provide pedalling support, but it meant that in the open mode the rear end absorbed the terrain like melted butter.

You may have noticed that Trek has been making a conscious move away from proprietary suspension components lately, and that’s coincided with building bikes that offer more neutral pedalling performance. The increased anti-squat is one part of the equation on the new Fuel EX, and the other part is the custom-tuned Float X, which Trek has configured with a digressive compression tune on the main piston. This creates a decent low-speed threshold, which provides a level of support that sits between the Open and Medium settings on the previous RE:aktiv damper.

The result is that you can ride with the shock fully open, and the Fuel EX still offers great stability under pedalling inputs, with no real need to activate the climb switch. If you detest remote lockouts and having to flip shock levers all the time, this will certainly be appealing.

The downside is that the suspension isn’t as supple over smaller rubble and at slower speeds. Along with the stiff chassis and carbon wheels, more of those vibrations are transmitted to the rider. As such, careful consideration with tyre pressure is needed to maximise grip and comfort.

Because there is more support however, the Fuel EX gives your feet a stronger platform to push off of, with greater feedback during high-load scenarios. Indeed the harder and faster you push, the better the Fuel EX responds. In that sense, it’s less of a comfy cruiser like its predecessors, and more of a mid-travel bruiser that loves to ride hard and fast.

Component highs & lows

As a complete bike, the Trek Fuel EX is a solid package that puts the emphasis on capability over light weight.

The Bontrager SE5 tyres are a good example, coming in at 1,100g each on our workshop scales. They roll reasonably well given their weight and size, and we’ve found them to provide consistent grip on rocky, hard-packed soil, which will suit most Aussie trail riders. The tread is a little shallow though, and the compound isn’t the softest, which sees them struggling to latch on when the conditions are wet and loose. We’d prefer something a little stickier and toothier up front, like a Maxxis Minion DHR II with 3C MaxxGrip rubber.

While the carbon Bontrager Line Pro rims are quite stiff, they have proven to be plenty tough. We’ve tested five of these wheelsets across various bikes over the past few years and we’ve not encountered a single issue. The y also come with a two-year crash replacement guarantee, which is great insurance given the hell that you can put this bike through. Furthermore, the frame itself comes with a lifetime warranty for the original owner.

There’s still plenty of real-world protection though, including a generous two-piece armour plate that bolts to the underside of the downtube. There’s also a metal chain-suck guard behind the chainring, and a full-coverage chainstay protector. Along with the fully guided internal cable routing, the Fuel EX is an impressively quiet and rattle-free bike on the trail. Well, except for the rear thru-axle lever, which I removed after the first ride.

Otherwise the finishing details are all sound. The adoption of a bigger 34.9mm seat tube diameter is welcome, as it accommodates a stiffer and stronger dropper post, particularly for the larger sizes. Mechanics will be happy to see a threaded BB shell, and we’re fans of the downtube storage. The trap door has none of the play that we encountered on the last Fuel EX we tested, with a tight fit and a nice lever action.

It’s certainly a high quality chassis, and many riders are likely to appreciate the in-built versatility. We’re looking forward to trying out the adjustable head angle once the aftermarket cups become available, and we’d also be keen to try out the Fuel EX with a coil shock. Setting it up as a mullet will be more straightforward, especially as you only need to buy an air spring to extend the Fox 36 up to 160mm of travel.

Trek Fuel EX vs Specialized Stumpjumper

Alongside the Trek Fuel EX, the Specialized Stumpjumper is one of the most popular and well-known trail bikes in this category. In terms of travel and the overall build, the Fuel EX sits right in between the regular Stumpjumper and the Stumpjumper EVO. However, it’s the regular Stumpy that I’ve been spending the most time on lately, both in its stock configuration and with a burlier mullet setup .

Compared to the Fuel EX, the Stumpjumper has a touch less travel with a 140mm fork and 130mm at the rear. It also uses a simpler suspension layout, with the carbon models employing a flex-stay design. Combined with its slimmer tube profiles, the carbon Stumpjumper frame is very light. Specialized claims it weighs just 2.28kg including the shock, which is over a kilo lighter than a carbon Fuel EX.

This theme extends to the Stumpjumper’s build kit, with Specialized electing for the skinnier Fox 34 over the 36. Along with an in-line shock, lighter brakes, wheels and tyres, there’s a considerable difference in the overall bike weight. For example, the Stumpjumper Pro we tested weighed 12.84kg.

While the geometry is pretty similar between the two bikes, the Specialized Stumpjumper rides much lighter on the trail compared to the Trek Fuel EX. It offers more comfort, with its lithe chassis and smooth suspension performance providing better compliance over rough terrain. It’s quite sporty and sprightly, though its active suspension design does need taming on the climbs by making use of the rear shock’s compression lever.

In comparison, the Fuel EX is more naturally efficient. It’s also more planted at speed, with its sturdy chassis and supportive suspension providing better big-hit capability. It feels more like a short travel enduro bike, which will suit heavier and harder riders.

Both bikes will handle a longer fork and can be set up as a mullet, though Specialized makes a specific link for the Stumpjumper to maintain the stock geometry. There is greater versatility in the Fuel EX chassis, with the option to adjust the head angle and fit a coil shock.

As for value, the Fuel EX offers a more appealing spec package. A Stumpjumper Expert sells for $9,800 AUD and comes with a Fox 34 GRIP2 fork, SRAM G2 brakes, an X01 drivetrain, alloy wheels and handlebars. In comparison, an equivalent Fuel EX 9.8 XT sells for $800 AUD less. It gets a simpler GRIP damper for its Fox 36 fork, though it does feature a piggyback shock, a Shimano XT groupset, a carbon one-piece RSL cockpit and carbon wheels with that 2-year crash replacement guarantee.

Flow’s Verdict

For many trail riders, the Trek Fuel EX 2023 is likely to tick just about every box on your new bike wish list. It’s as up to date as it gets, featuring loads of adjustability, internal storage and a nuanced approach to its size-specific geometry. Along with the increased travel and muscly frame, it offers greater stability and big-hit control over its predecessor, while still being a fun and involving bike to ride on modern flow trails.

It is a bit of a chonker though, so those who are looking for a lightweight and speedy trail bike may be better served by the latest Top Fuel .

The stiff chassis and supportive suspension also mean the Fuel EX tends to transmit more feedback, making it less comfortable to ride over rocky terrain. We’d be curious to try out a lighter shock tune to see how much of a difference that would make to the overall ride quality, but in its stock form the Fuel EX isn’t as plush as competitors like the Giant Trance X and Specialized Stumpjumper .

It is impressively efficient though, and the stable suspension gives you a load of support when you’re really giving it the beans on the descents. In this sense, the Fuel EX is closer in feel and performance to an enduro bike. You’ll still want to look towards the Slash if you’re serious about racing, but outside of the tape the Fuel EX will handle just about everything a modern trail centre or bikepark could throw at it. And for those who really want to up the limits, the adaptable chassis can easily be configured for some pretty aggressive riding.

Indeed for those who are chasing maximum capability without going to a big, spongy enduro bike, the Fuel EX is a mighty appealing option.

You’ll still want to look towards the Slash if you’re serious about racing, but outside of the tape the Fuel EX will handle just about everything a modern trail centre or bikepark could throw at it.

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• All Mountain

Trek Fuel EX 8 Gen 6 Review

• good down tube protection
• independent look
• many adjustment options
• benchmark bike in this price range
• rides excellent in the downhill
• 25 years warranty
• 15,65 kg - a bit heavy

Overall Bike Check

The most importanten ratings of the [bike_model] ⬤ in comparison to the competitor bikes of following categorie: (All Mountain up to 4500 €) ⬤ .

Value for Money Check

If you are keen on value for money, this is your chart. It shows you at a glance how many bike you get for 3999 €.

Je steiler der Winkel des Sitzrohrs ist, desto effizienter können Sie in die Pedale treten.

• Frame Alpha Platinum Aluminium, integriertes Staufach, verstellbarer Steuersatzwinkel, per Mino Link abstimmbare Geometrie, einstellbare Progression, geführte interne Zugverlegung, Umlenkhebel aus Magnesium, Sitzrohrdurchmesser 34,9 mm, ISCG 05, 55 mm Kettenlin
• Frame Material Aluminium
• Fork Fox Rhythm 36, Float EVOL-Luftfeder, GRIP-Dämpfung, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, 15-mm-Kabolt-Achse, 140 mm Federweg
• Spring Unit air
• Remote-Lockout yes
• Damper FOX Performance Float X, 2-Positionen-Dämpfung, 185 x 55 mm
• Gearrange 510%
• Drivetrain 1x12
• Gear Lever Shimano XT M8100, 12fach
• Rear Derailleur Shimano XT M8100, langer Käfig
• Crank Shimano Deore M6120, 30 Z, 55 mm Kettenlinie, 170 mm Kurbelarmlänge
• Cassette Shimano Deore 10-51
• Chain Shimano SLX M7100, 12fach
• Brake Set Hydraulische 4-Kolben-Scheibenbremse von Shimano, M6100 Bremshebel, M6120 Bremssattel
• Brake Rotors 203/180
• Wheel Set Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-Loch-Scheibenaufnahme
• Tires Front Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength-Karkasse, Aramidwulstkern, 60 TPI, 29 x 2.50
• Tires Rear Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength-Karkasse, Aramidwulstkern, 60 TPI, 29 x 2.50
• Saddle Bontrager Arvada, Streben aus CrMo-Rohr, 138 mm Breite
• Seat Post TranzX JD-YSP39 interne Zugführung, 34,9 mm
• Stem Bontrager Elite, 35 mm, 0 Grad, 45 mm Länge
• Handle Bar Bontrager Line, Aluminium, 35 mm, 27,5 mm Rise
• Handle Bar Width 760

best alternatives

• UDH derailleur hanger
• 2815 grams frame weight
• downtube storage compartment
• K.I.S. system

• integrated storage compartment in downtube
• space for two bottle cages
• almost invisible cables
• geometry adjustment via flip chip

• high quality wheels
• with 14 kg lighter than comparable bikes

• very good and independent rear triangle
• top bike in this price range
• excellent geometry
• strong in the descents
• strong climber

• definately shredable in the downhill
• 5 years warranty

• strorage compartment
• asymmetric frame design
• strong in the uphills

• Integrated storage compartment in the lower ear
• better shifting than the direct competition

• Maestro rear triangle
• great wheels for this price range

• incl. Cannondale Wheel Sensor
• BSA bottom bracket
• mounting option for storage bag on the top tube
• large service window

• chainstays grow with frame size

Expirience with the Trek Fuel EX 8 Gen 6

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Trek fuel ex 8 gen 6 vs specialized stumpjumper comp alloy.

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About the author

Ludwig Döhl

... has spent more than 100,000 kilometers in the saddle of over 1000 different mountain bikes. The essence of many hours on the trail: Mountain bikes are awesome when they match your personal preferences! With this realization, he founded bike-test.com to assist cyclists in finding their very own dream bike.

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Trek Fuel EX Vs Top Fuel Mountain Bike ?

Trek mountain bikes are built for the trails, and no bikes illustrate that better than the Trek Fuel EX and Trek Top Fuel. So, it’s understandable to pit Trek Fuel EX vs Top Fuel, which compels us to ask, what’s the difference?

Trek Fuel EX is a full suspension 29er trail bike with a 140mm front suspension and a 130mm rear suspension, while Trek Top Fuel is a 29er or 27.5-inch full-suspension cross-country bike with a 120mm front and rear suspension.

So, you can distinguish the trail bikes according to the type, suspension travel, and wheel size. Other differences are with respect to the geometry, suspension technology, project one customization, speed, weight, and even price.

Below is a table breakdown of all the nine differences between Fuel EX and Top Fuel to be explored in detail later:

This article will not just discuss the differences between the two Trek MTBs but will also highlight their similarities. Without saying much, let’s begin with the bikes’ overview.

Trek Fuel EX Overview

Trek Fuel EX is a full suspension trail mountain bike by Trek designed to take on just about any trail all season long.

This mountain bike comes with a balanced trail geometry that brings out the perfect balance between speed and control. As a result, it’s easier to handle on tricky trails and promises a fast pace.   

Fuel EX is available in 29-inch (29er) and 27.5-inch wheel sizes to accommodate all heights. Women who naturally have a shorter stature can set for 27.5-inch options, while men who are inherently taller can go for 29ers.

Suspension-wise, Fuel EX features a 140mm front suspension and a 130mm rear suspension, which is enough to hit just about any trail and enjoy the same comfort and bump-cushioning.

In terms of suspension technologies, the manufacturer employs Mono Link to self-adjust the bike frame, Re: Aktiv to offer you more control, and Active Braking Pivot for more confident braking.   

The most notable miss is the Project One customization option. But we’ve several models to choose from, such as Fuel EX 5 Deore, Fuel EX 9.1XOR, Fuel EX7, Fuel EX 8, Fuel EX9.7, Fuel EX 9.8 GX/XT/GX AXS, Fuel EX9.9 XTR, and Fuel EX 9.9X01 AXS.

Overall, Trek Fuel EX is perfect for anyone who wants a versatile do-it-all mountain bike.

Trek Top Fuel Overview

Trek Top Fuel is a short travel 29er cross country mountain bike designed for cross country racing and fun trail riding.

This bike is more forgiving and impulsive on aggressive descents than regular XC bikes but has a snappier feel than a traditional trail bike. So, it gives you the best sense of both worlds.

It has a 120mm front suspension and 120mm rear suspension to have a more comfortable and confident ride. And since it’s a 29er, obstacle rolling is much funnier. The full-suspension XC bike enjoys a progressive geometry, which is more relaxed and offers you more control.

Suspension-wise, this XC bike employs Mono Link Technology and ABP, just like Fuel EX to promise self-adjustment geometry and confident braking.

But unlike Fuel EX, Top Fuel lacks Re: Aktiv suspension technology. Instead, it employs Anti-Squad technology, a suspension resistance technology that offers you more acceleration with every pedaling. That’s practically why this bike is a better cross-country racing bike.

The best bit is that Top Fuel is customizable through Project One. But still, the bike family is split into several models – which include Top Fuel 5 Deore, Top Fuel 7 Deore/XT, Top Fuel 9.7 SLX/XT, Top Fuel 8, Top Fuel 9.8 GX/AX SXS/XT, and Top Fuel 9.9X01/XTR/XX1 AXS.

Trek Fuel EX Vs Top Fuel Side-By-Side Comparison!

Now, here is how Fuel EX and Top Fuel compare:

1. Bike Type

Fuel EX is generally a trail mountain bike that can take on just about any trail every day – from dirt trails to rough off-roads and forest trails.

On the other hand, Top Fuel is a cross-country mountain bike that you can use for any cross-country event. Whether you want to compete at a local event or race casually in the countryside, you cannot go wrong with Top Fuel.

2. Suspension Travel

Fuel EX is a do-it-all mountain bike mainly because of its long travel range. The bike features 140mmm of front suspension and 130mm of rear suspension, enough to take on all terrains.

The suspension allows you to ride downslope and go over rocks. That’s how powerful the MTB is. Top Fuel promises 120mm suspension travel on the front and rear side, shorter than what you get from Fuel EX but enough for cross-country biking.

You want your cross-country race bike to feel lightweight and offer you better control, and that’s what you get from the 120mm travel range.

3. Trek Fuel EX Vs Trek Top Fuel Wheel Size

Top Fuel is a 29-er (29-inch mountain bike), while Fuel EX offers 29-inch and 27.5-inch wheel options. The difference is that 29ers mostly favor taller guys while 27.5-inch accommodate both taller and shorter guys.

So, you are more likely to get a matching fit with Fuel EX than Top Fuel. However, the advantage of Top Fuel is that you can have a custom-made bike matching your body size.

4. Geometry

These two Trek mountain bike families differ in their geometry, which affects their overall feel.

Fuel EX, for example, has a balanced trail geometry, which bridges the gap between the fast-handling short-trail geometry and the slow-handling greater-trail geometry.

As a result, the bike is easier to handle at high-speed and, pretty stable, and offers you more control. You cannot ask for anything better than a balanced trail geometry.

On the other hand, Top Fuel has a progressive geometry characterized by a longer wheelbase, thus more relaxed and promising more control.

5. Trek Top Fuel Vs Fuel EX Suspension Technology

Both Trek MTBs employ Active Braking Pivot (ABP) and Mono Link suspension technologies. ABP generally tunes the bike suspension to the braking and acceleration to enable you to brake more confidently and boss the trail.

Mono Link in opposite allows you to adjust the bike’s geometry quickly and on the go. The difference is that Fuel EX employs Re: Aktiv suspension technology while Top Fuel uses Anti-Squat suspension technology.

Re: Aktiv offers Fuel EX more grip, control, and a responsive feel, while Anti-Squat suspension allows you to go faster with every step. The more you pedal a Top Fuel, the faster it accelerates.

6. Trek Ex Vs Top Fuel Project One

Project One is Trek bike’s customization project. While Project One is available for top high-end Top Fuel models, it’s not available for Fuel EX. So, if you want a custom-made MTB for competition, Top Fuel is the way to go. 

That, however, doesn’t make Fuel EX an inferior family. No! There are so many high-end Fuel EX models to choose from, and they all come in all frame sizes, which means you can easily find your fit.

7. Bike Weight

There is at least a 2-4-pound difference between Fuel EX and Top Fuel of the same generation and size. For example, while Fuel EX 9.9 X01 AXS weighs 28.15 pounds, Top Fuel 9.9 XXL weighs 26.13 pounds.

That makes Top Fuel lighter than Fuel EX, and it’s understandable, given that Top Fuel is a cross-country racer while Fuel EX is a trail bike.

8. Top Speed

Being the lighter of the two and employing Anti-Squat technology makes Top Fuel faster than Fuel EX. That hugely explains why Top Fuel is a cross-country bike as it’s speedy, thus suitable got cross county.

Though you can race with a Fuel EX since it’s an all-terrain trail bike, you cannot go as fast as someone riding an XC bike, which is Top Fuel.

9. Bike Price

Trek Top Fuel costs more than Fuel EX because of the lower weight advantage, anti-squat technology, and Project One customization availability.

Trek Fuel EX Vs Top Fuel Similarities

After looking at the things that set Fuel EX and Top Fuel apart, here are some things that the two Trek MTBs have in common.

Suspension Technologies – Both bikes employ Active Braking Pivot (ABP) and Mono Link suspension. ABP promotes confident braking while Mino Link encourages geometry adjustment on the go.

Frame – Both families employ alpha aluminum on their mid-range bikes and OCLV carbon on high-end options.

Sizes – Both bike families come in all frame sizes as follows:

• Extra small (rider’s height: 137-155cm)
• Small (rider’s height: 153-166.5cm)
• Medium (rider’s height: 161-172cm)
• Medium/Large (rider’s height – 165.5- 179cm)
• Large (rider’s height: 177-188cm)
• Extra Large (rider’s Height – 186-196cm

Weight Limit – These two bike families limit their load capacities to 300 pounds. So, they are equally strong and perfect for heavyweight guys.

People Also Ask

1. what is the difference between trek top fuel and fuel ex.

The difference between Trek Top Fuel and Fuel EX is that the latter is a 29-inch trail bike while the former is a 29/27.5-inch cross country bike.

2. Is The Trek Fuel EX A Trial Bike?

Yes, Trek Fuel EX is a trail bike. It is a full-suspension trail bike with 140mm front suspension and 130mm rear suspension.

3. How Much Travel Does the Trek Fuel EX Have?

Trek Fuel EX comes with a 140mm front suspension and 130mmm rear suspension. The suspension offers optimum bump absorption and stability to take on just about any trail.

Closing Thought on Trek Fuel EX Vs Top Fuel:

Generally, Trek Fuel EX is an all-terrain trail bike with a 140mm front suspension and 130mm rear suspension. On the other hand, Trek Top Fuel is a cross country racing 29er with a 120mm front and rear suspension.

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Trek Fuel EX 8 29

• AUS $ NZD $ USD $ CAD $ GBP £ EUR €

Colour / Matte Quicksilver

Size / 15.5 in., 17.5 in., 18.5 in., 19.5 in., 21.5 in., 23 in.

Weight / 31 lb 1.7 oz (14,110 g)

At a glance

Full Floater, EVO link suspension, ABP (Active Braking Pivot), Straight Shot frame design, Knock Block frame defense, Mino Link adjustable geometry, Control Freak internal cable routing

Where To Buy

Specifications

• Frame Alpha Platinum aluminum, down tube guard
• Fork FOX Rhythm 34 Float, GRIP adjustable damper, E2 tapered steerer, G2 Geometry, 51mm offset, Boost110, 130mm
• Shock FOX Performance Float EVOL, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 210mm x 52.5mm
• Hubs Bontrager Line Comp 30, 54T Rapid Drive, Boost110 front, Boost148 rear
• Wheels Bontrager Line Comp 30, Tubeless Ready (tubeless strips included, valves sold separately)
• Wheel Size 29"
• Tires Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 29" x 2.40"
• Chain 432mm, N/A, SRAM Descendant 6k Eagle, direct mount, 32 tooth, X-Sync, SRAM GX Eagle
• Crank SRAM Descendant 6k Eagle, direct mount
• Bottom Bracket 344mm, PF92
• Rear Derailleur SRAM GX Eagle, Roller Bearing Clutch
• Shifters SRAM GX Eagle, 12-speed
• Brakeset SRAM Guide R hydraulic disc, SRAM Guide R hydraulic
• Handlebar Bontrager Line, 35mm clamp, 15mm rise, 750mm width
• Saddle Bontrager Evoke 2, chromoly rails
• Seatpost Bontrager Drop Line, internal routing, 15.5": 100mm travel, 17.5" and 18.5": 125mm travel, 19.5" through 23": 150mm travel, 31.6mm, Standard single bolt, 31.6mm, Standard single bolt
• Stem Bontrager Line, Knock Block, 35mm clamp, 0° rise, 60mm length
• Grips Bontrager Race Lite, lock-on
• Headset Knock Block Integrated, sealed cartridge bearing

Q: How much is a 2018 Trek Fuel EX 8 29?

A 2018 Trek Fuel EX 8 29 is typically priced around $3,200 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: Where to buy a 2018 Trek Fuel EX 8 29?

The 2018 Trek Fuel EX 8 29 may be purchased directly from Trek .

Q: How much does a 2018 Trek Fuel EX 8 29 weigh?

A 2018 Trek Fuel EX 8 29 weights 31 lb 1.7 oz (14,110 g).

Q: What size wheels does the 2018 Trek Fuel EX 8 29 have?

The 2018 Trek Fuel EX 8 29 has 29" wheels.

Q: What size 2018 Trek Fuel EX 8 29 should I get?

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