Fuel EX 8 XT Gen 6 - Trek Bikes (GB)

Overview

‘This is a bike that could be used to head out for a big meandering backcountry adventure one day, roll up to the starting line in a local enduro race the next or even head into the bike park for a lap or three without missing a beat.’

"The burliest, most versatile and most capable Fuel yet; truly up for whatever you want to ride [...] The updated geometry sits comfortably amongst today's best trail bikes [...] Absolutely shreds right out of the box."

"Fuel EX proved itself a happy climber. From slabs to roots and square-edge hits, the Fuel EX handled it masterfully. A damn fine trail bike right out of the box, no matter your riding style."

"Fuel EX absolutely devours chunky terrain while still retaining the ability to tractor up steep climbs. I have become convinced that a bike with long, stable geometry and mid-level travel really can provide the best of both worlds."

‘The term “quiver killer” may be old and tired, but there’s nothing old-fashioned about a versatile mountain bike that can handle nearly any terrain [...] Riding the Fuel EX this summer was a treat!’

"Fuel EX is a highly adaptable bike that feels comfortable in a really wide variety of terrain but doesn’t confuse itself for anything more or less. Bike riders, rejoice."

"Fuel EX's geometry feels ready for just about anything. There's plenty of traction for climbing and a nice fluttery feel on descents, calmly smoothing out the trail chatter."

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Choose from the lighter 130/140 mm Fuel EX Gen 5 with better parts for the price or the more robust 140/150 mm Fuel EX Gen 6 with more adjustability.

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Whether you're busting berms, ripping rock gardens or surfing singletrack – here are the accessories and gear you need to make sure your Fuel EX is always ready to send.

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Time to get out the repair stand for some maintenance? Find a detailed breakdown of your bike with part numbers, torque values and platform-specific tech instructions below.

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Watch Jason from Mahalo My Dude take a Fuel EX from frameset to sweet new build.

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Follow along as Casey Brown and Kirsten Van Horne let 'er rip from Golden to Kamloops on the new Fuel EX.

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When it comes to being a better trail rider, practice makes perfect. Get seven tips from Pinkbike’s Christina Chappetta that will have you setting PRs and riding with more confidence in no time.

Features

Internal frame storage makes it easy to ditch the pack and still carry your ride essentials.

Watch the video

Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

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Install angle-adjust headset cups (sold separately) to tweak the 64.5-degree head tube angle a degree steeper or slacker to your liking – all without impacting your bottom bracket height.

How it works

Adjust the leverage rate with just a flip of a chip. Ride it in the Less progressive setting for a plusher feel perfect for rugged trails with square-edge bumps. Flip it to More progressive when you're hitting big features and don’t want to bottom-out, or when you want to run a coil shock.

Size-specific chainstays provide balanced handling to keep the ride nimble for smaller riders and improve front wheel traction on climbs for taller riders.

Craving the nimble ride of 27.5˝ wheels but don’t want to sacrifice the speed of a 29er? No need to choose. The Fuel EX is mullet-ready, just throw Mino Link into high, toss on a 160 mm fork and get ready to party.

Shimano XT is the original mountain bike groupset and trusted by generations of mountain bikers around the world. Whatever the trail, wherever you ride, XT is your solution for mountain biking today. Reliable shifting. Superior braking. Intuitive maintenance. XT is the high performance workhorse you can count on.

Deck out your Fuel EX Gen 6 with our favourite compatible accessories

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This bike doesn’t come with pedals because you'll have a better ride if you choose your own. Explore the pedal guide to find the best pedals for your riding style. Reach for flat pedals for simple versatility or go for clipless MTB pedals if you want control and efficiency.

See the guide

This suspension calculator will help you optimise your suspension settings for your riding weight. Simply follow the steps to find your best set up.

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The forward-thinking frame design opens possibilities for riders who want full customisation. A bigger seat tube lets you roll with a beefier, longer dropper post, and broader shock compatibility plays well with loads of aftermarket shocks, including coil.

Make your head tube angle slacker or steeper by one degree with angle-adjust cups.

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Tubeless Ready rims and tyres make it easy to ditch the tubes so you get better traction, fewer flats and less weight. You're ready to roll straight out of the box with the included TLR rim strips, valves and sealant.

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More robust than pressfit, threaded BBs hold up in nasty conditions and make servicing easier.

The two-piece dual-density bolt-on down tube guard protects from rock strikes and shuttle damage – all while quieting the ride with a beefy chainstay guard.

International Standard Chain-Guide mounts offer easy chain-guide installation and adjustment.

Bigger is better. The oversized seat tube diameter gives more support and strength for longer travel droppers, and allows for more robust, durable internals that work faster.

Fine tune head tube angle by 1/2° and BB height by up to 10mm with the simple turn of a nut. Just flip the link to choose between slack or slacker geometry, without negatively affecting suspension performance. A Trek exclusive.

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Specs

Frame	Alpha Platinum Aluminium, internal storage, angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate, guided internal routing, magnesium rocker link, 34.9 mm seat tube, ISCG 05, 55 mm chain line, BSA 73, downtube guard, shuttle guard, ABP, UDH, Boost148, 140 mm travel
*Fork	Size: XS , S Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 140 mm travel
Size: M , ML , L , XL , XXL Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel
Shock	Fox Performance Float X, 2-position damper, 185 mm x 55 mm
Max compatible fork travel	160 mm, XS/S: 150 mm

*Wheel front	Size: XS , S Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 27.5"
Size: M , ML , L , XL , XXL Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
*Wheel rear	Size: XS , S Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 27.5"
Size: M , ML , L , XL , XXL Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle, 29"
Skewer rear	Bontrager Switch thru-axle, removable lever
*Tyre	Size: XS , S Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 27.5 x 2.50"
Size: XS , S Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 27.5x2.50"
Size: M , ML , L , XL , XXL Bontrager XR5 Team Issue, Tubeless Ready, Inner Strength casing, aramid bead, 60 tpi, 29x2.50"
Tyre part	Bontrager TLR sealant, 180 ml/6 oz
Max tyre size	Frame: 29x2.50" (XS & S: 27.5x2.50"), Fork: See manufacturer

Shifter	Shimano XT M8100, 12-speed
Rear derailleur	Shimano XT M8100, long cage
Crank	Shimano Deore M6120, 30T ring, 55 mm chainline, 170 mm length
Bottom bracket	Shimano BB-MT501 BSA
Cassette	Shimano XT M8100, 10-51, 12-speed
Chain	Shimano SLX M7100, 12-speed
Max. chainring size	1x: 34T round, 32T oval, min 28T

*Saddle	Size: XS , S , M , ML , L , XL , XXL Bontrager Verse P3, chromoly rails
Size: XS , S , M , ML , L , XL , XXL Bontrager Arvada, hollow chromoly rails, 138 mm width
*Seatpost	Size: XS , S TranzX JD-YSP39, 100 mm travel, internal routing, 34.9 mm
Size: XS , S Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 34.9 mm, 310mm length
Size: M , ML TranzX JD-YSP39, 150 mm travel, internal routing, 34.9 mm
Size: M , ML Bontrager Line Dropper, 150mm travel, MaxFlow, internal routing, 34.9 mm, 410 mm length
Size: L , XL , XXL TranzX JD-YSP39, 170 mm travel, internal routing, 34.9 mm
Size: L , XL , XXL Bontrager Line Dropper, 170 mm travel, MaxFlow, internal routing, 34.9 mm, 450 mm length
*Handlebar	Size: XS , S Bontrager Line, alloy, 35 mm, 27.5 mm rise, 750 mm width
Size: M , ML , L , XL , XXL Bontrager Line, alloy, 35 mm, 27.5 mm rise, 780 mm width
Grips	Bontrager XR Trail Elite, nylon lock-on
*Stem	Size: XS , S Bontrager Elite, 35 mm, 0-degree, 35 mm length
Size: M , ML , L , XL , XXL Bontrager Elite, 35 mm, 0-degree, 45 mm length
Brake	Shimano 4-piston hydraulic disc, M6100 lever, M6120 calliper
*Brake rotor	Size: XS , S , M , ML , L , XL , XXL Shimano RT66, 6-bolt, 203 mm
Size: XS , S , M , ML , L , XL , XXL Shimano RT66, 6-bolt, 180 mm
Rotor size	Max brake rotor sizes - Frame: 203mm, Fork: see fork manufacturer

Weight	M - 15.91 kg / 35.08 lbs (with TLR sealant, no tubes)
Weight limit	This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).

Sizing

How tall are you?

To measure your height, stand up straight, barefoot, with your back, heels, shoulders and head all touching a wall. While looking straight ahead, place a book or straight edge on your head and slowly push it against the wall. Your straight edge should be parallel with the floor. Mark the spot where the bottom of the book is touching the wall. The distance from the marked spot to the floor is your height.

What is your inside leg?

How to measure: Stand barefoot with your back straight and against a wall. Tuck a ruler or something that extends to the floor between your legs. Using both hands, and keeping it level, pull the ruler up into your crotch as if you were sitting on the saddle. Measure the distance from the top edge of the ruler to the ground to find your inside leg measurement. Your inside leg is very important to your final bike size so please measure carefully.

Geometry

Service

Reviews

We'll take care of you. Period.

Free shipping and professional assembly

Warrantied for life

Pinkbike's 2022 Mountain Bike of the Year

Editor's Choice: Best Mid-Travel Trail Bike

"Our favourite Trek"

"Fuel EX is a masterpiece"

Editor's Choice

"Loves to ride fast, both up and down"

"Ready for anything"

More options

Which generation is right for you?

FAQ

Fuel EX-compatible accessories

Service manual

It’s new bike day!

Golden Heaven: Nothing but good vibes

Get faster on the trail in a week

Internal Storage

Active Braking Pivot

Slack or steep, the choice is yours

Adjust the sus for full send

Size-specific stays

Business at the front, party at the back

Shimano XT

Trail-ready gear

You almost forgot your pedals

Suspension Calculator

New frame, new possibilities

Need an adjustment?

Complete Tubeless System

Threaded bottom bracket

On guard

ISCG mounts

Oversized 34.9mm dropper post

Mino Link adjustable geometry

How tall are you?

What is your inside leg?

We'll take care of you. Period.

Free shipping and professional assembly

Warrantied for life

Pinkbike's 2022 Mountain Bike of the Year

Editor's Choice: Best Mid-Travel Trail Bike

"Our favourite Trek"

"Fuel EX is a masterpiece"

Editor's Choice

"Loves to ride fast, both up and down"

"Ready for anything"

More options

Which generation is right for you?

FAQ

Fuel EX-compatible accessories

Service manual

It’s new bike day!

Golden Heaven: Nothing but good vibes

Get faster on the trail in a week

Product features

Internal Storage

Active Braking Pivot

Slack or steep, the choice is yours

Adjust the sus for full send

Size-specific stays

Business at the front, party at the back

Shimano XT

Trail-ready gear

You almost forgot your pedals

Suspension Calculator

New frame, new possibilities

Need an adjustment?

Complete Tubeless System

Threaded bottom bracket

On guard

ISCG mounts

Oversized 34.9mm dropper post

Mino Link adjustable geometry

How tall are you?

What is your inside leg?