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Trek Fuel EX 8 XT (Rage Red to Dnister Black Fade) 2022

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 Trek Fuel Ex 2022 - Key Features


It's right for you if...

You're cool with your wheels leaving the ground, but you also like to go the distance on marathon singletrack sessions. You want a bike that lets you crush any trail, and your priority is on the parts


The tech you get

An alloy frame, 140 mm FOX Rhythm 34 fork and 130 mm of rear travel with an extra-efficient RE:aktiv damper. A Shimano XT 1x12 drive train with an extra-low 51-tooth climbing gear, plus a Bontrager Line dropper post


The final word

Fuel EX 8 gives you added efficiency with Shimano's latest, widest-range drive train and Trek's unique RE:aktiv damper that provides firm pedalling support without giving up any plush compliance.

Why you'll love it

  1. This bike is perfect for shredding singletrack, hitting drops and pushing your limits in multi-stage and marathon events
  2. If you measure quality in performance per pound, you won't do better than Fuel EX 8
  3. You sense its capability immediately, like when you're charging through sections of trail that you never thought you'd clean
  4.  The shifter-style, underbar remote dropper post lever is super intuitive and easy to use
  5. We expanded our size range to ensure a better fit for all riders.

'A world-class trail bike!'

"The Fuel EX is a beautifully balanced and capable trail bike. The rear suspension is beautiful; as close to ideal as any bike I've ridden. It's sensitive where you want it to be, It feels deep and controls big hits very well, and there's a nice platform for pedalling, and to pump and pop off when you're playing."


"Good at pleasing everyone"

"The Fuel EX has a few tricks that help it keep a level head when outside of its comfort zone, and to be a cloud on rails when's it's in the zone. Everything about the Fuel Ex, which was already good at pleasing everybody, is now even better".


'An absolute Trail Rocket'

"Thanks to its burlier components, increased travel and more aggressive geometry, it has become more of a shredder than ever! More performance, fun and trail prowess".


'Perfect All-rounder'

"In a world where most new full-suspension mountain bikes are amazing. Fuel EX stands apart as even more than that". 



Will my bike have a curved top tube?

Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.

Active Braking Pivot

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.


RE:aktiv technology gives you firm support for efficient pedaling that instantly gives way for smooth control when the trail turns rough

Straight Shot w/Knock Block

Trek's Straight Shot frame design optimises the stiffness-to-weight ratio for a more responsive ride. You'll be able to push harder and stay more planted on your line when the going gets rough


Suspension calculator

This suspension calculator will help you to optimise your suspension settings for your riding weight. Simply follow the steps in the video or listed below.

Note that recommended settings are suggested starting points, not rigid values that will work for every rider.


Complete Tubeless System

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 included TRL rim strips, valves and sealant. 


Alpha Platinum Aluminium

Our premium lightweight aluminium is continuously cold extruded and butted at multiple points, and hydro-formed into sophisticated tube shapes for maximum strength and minimum weight.


Control Freak cable management

The lightest, quietest, most versatile cable management system allows any combination of shift, brake, lockout and dropper post lines to be routed through the frame for clean looks and the ultimate custom set-up.


Mino Link adjustable geometry

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.



Wider dropouts (110mm front 148mm rear) give you the stiffness of a 27.5" wheel with all the benefits of a 29" wheel, and Boost148 at the back lets you run wider tyres and a larger chain ring without affecting q-factor and pedalling efficiency.


Trek Fuel EX Size Chart:

  S M M/L L XL




5'0.2" -5'5.6"


5'3.4" -5'7.7"


5'5.2" - 5'10.5"


5'9.7" -6'2.0"


6'1.2" -6'5.2"


72.0 -79.0cm

28.3"  -31.1"

76.0 -81.0cm

29.9"  -31.9"


30.3" -33.1"

83.0 -88.0cm

32.7"  -34.6"

87.0 -92.0cm

34.3" - 36.2"



(Please note the small size frame is 27.5" and then 29" from Medium onwards)


Geometry Low



Frame size number 15.5 17.5 19.5 21.5
Frame size letter S M L XL
Wheel size 27.5" 29" 29" 29"
A - Steal tube 39.5 42.0 45.0 50.0
B - Seat tube angle 69.0° 67.5° 67.5° 67.5°
Effective seat tube length 75.0° 75.0° 75.0° 75.0°
C - Head tube length  10.0 10.0 10.5 12.0
D - Head angle  66.0° 66.0 66.0° 66.0°
E - Effective top tube 56.8° 60.3° 63.4 66.3
F - Bottom bracket height 33.5 34.0 34.0 34.0
G - Bottom bracket drop 2.1 3.4 3.4 3.4
H - chainstay length 43.7 43.7 43.7 43.7
I  - Offset  4.3 4.3 4.3 4.3
J  - Trail 11.1 11.9 11.9 11.9
K  - wheelbase 114.3 117.9 121.1 124.2
L - Standover 70.0 74.2 75.0 76.2
M - Frame reach  41.5 44.0 47.0 49.5
N - Frame stack 57.2 60.9 61.3 62.7



 Geometry High


Frame size number 15.5 17.5 19.5 21.5
Frame size letter S M L XL
Wheel size 27.5" 29" 29" 29"
A - Steal tube 39.5 42.0 45.0 50.0
B - Seat tube angle 69.5° 68.0° 68.0° 68.0°
Effective seat tube length 75.5° 75.5° 75.5° 75.5°
C - Head tube length  10.0 10.0 10.5 12.0
D - Head angle  66.5° 66.5 66.5° 66.5°
E - Effective top tube 56.7 60.2 63.3 66.2
F - Bottom bracket height 34.1 34.6 34.6 34.6
G - Bottom bracket drop 1.4 2.8 2.7 2.7
H - chainstay length 43.6 43.6 43.6 43.6
I  - Offset  4.3 4.3 4.3 4.3
J  - Trail 10.6 11.6 11.6 11.6
K  - wheelbase 114.3 117.8 121.0 124.1
L - Standover 70.7 74.8 75.6 76.8
M - Frame reach  42.0 44.5 47.5 50.0
N - Frame stack 56.8 60.5 60.9 62.3

Alpha Platinum Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, ISCG 05, magnesium rocker link, Mino Link, ABP, Boost148, 130mm travel
Fox Rhythm 34, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110, 15mm Kabolt axle, 140mm travel
Fox Performance Float EVOL, RE:aktiv 3-position damper, tuned by Trek Suspension Lab, 210x55mm
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110 front, Boost148 rear
Bontrager XR4 Team Issue, Tubeless Ready, Inner Strength sidewalls, aramid bead, 120 tpi, 29x2.60” front, 29x2.40” rear (smaller sizes: 27.5x2.60” front, 27.5x2.40” rear)
Shimano XT M8100, 12 speed
Rear Derailleur:
Shimano XT M8100, long cage, 51T max cog
Shimano XT M8100, 32T alloy ring, Boost
Bottom Bracket:
Shimano MT500, 92mm, PressFit
Shimano XT M8100, 10-51, 12 speed
Shimano SLX M7100, 12 speed
Bontrager Arvada, hollow chromoly rails
Bontrager Line Dropper, internal routing, 31.6mm
Bontrager Line, alloy, 35mm, 27.5mm rise
Bontrager XR Trail Elite, alloy lock-on
Bontrager Line, 35mm, Knock Block, 0 degree
Knock Block Integrated, cartridge bearing, 1-1/8” top, 1.5” bottom
Shimano 4-piston hydraulic disc, MT4100 lever, MT420 calliper
Please note:
Trek reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, and materials.
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How your bike is packaged

How to build your new bike

United Kingdom: New Bike Orders

Due to the current environment, our current delivery timescale for bikes in stock is: 7-15 working days.

As always once an order is placed we will liaise with you to keep you informed on the delivery of your new bike and with all new orders we will do our best to complete them in a shorter timeframe where possible. As with all things, at the momen this is subject to change but please be assured will do our best, to keep you as up to date as possible, at all times.

Delivery is between 1-5 days and is FREE on orders over £60 and £2.99 for any orders under £60. All products bought in the UK are subject to 20% tax (VAT).

International Orders

If you are a customer who would like to purchase a bike from outside the UK. Please contact us before you place the order to see if this is going to be possible.

Fill out my online form.

Here at MTB Monster we ship bikes and parts internationally via DHL. The service provided by DHL is both tracked and insured to provide you with peace of mind.

Delivery Costs - All our delivery prices depend on the size and weight of the items being sent in the post. For this information please use the guide below which calculates the delivery costs for all of the items in your shopping basket.

Tax Costs - If you live within the European single market you are subject to UK product tax. However, if your country is not part of the European single market (for example: USA /Australia) you are not subject to UK product tax and this tax will be removed at the checkout. 

Delivery Times - The amount of time our products will take to get to you will vary from country to country.

At MTB Monster we want you to be completely satisfied with your purchase. We have systems in place to ensure your products are correctly assembled and checked prior to delivery by our fully trained staff. All our products including bikes are very carefully packaged to prevent damage in transit, so it is unlikely that you will have any problems.

However, on occasion things can go wrong and if your purchase isn’t suitable for whatever reason you can find out below what can be done. Section 1 takes you through the returns process and section 2 advises you on what to do if you have a warranty issue.


Section 1 – RETURNS

What if my bike has arrived damaged or faulty?

If your bike is faulty or damaged on delivery you must inform us by completing a Warranty Form within 48 hours of the bike being delivered. Please complete the form in full. 

If it is a minor issue that you feel can be solved easily please contact us within 48 hours and we will be in touch as soon as possible to assist. Please note MTB Monster will not pay out any compensation or cover any cost of repairs no matter how minor without prior agreement. If you bike lands with any issues you must contact us first in order to potentially be supported. We cannot be held responsible if you have taken your item to another store and they have performed substandard repairs.

What is covered?

  • Manufacturing faults.
  • Damage in transit.

What is not Covered?

  • Items that have been damaged in a crash.
  • Items that have not been installed properly (e.g. stripped pedal threads).
  • Items that have been modified by the customer
  • Compensation for time off the bike whilst repairs are taking place.


What if my bike has been delivered and I no longer want it?

If you purchase a bike and change your mind you must contact us within 7 days of delivery and express your intention to return your bike. Items must then be returned within 28 days of purchase.

Unwanted bikes must be returned unused, undamaged and in the original packaging (this excludes Special Orders and Custom Builds). You can either mail the bike back to us yourself or we can collect it via courier. Collecting a bike will cost you £50 for UK customers (this will be deducted from your refund amount)

For non-UK residents we will advise the return cost based on your address. We will endeavour to do this in the most cost-effective way possible for you but can make no guarantees of the costs involved. Contact us to arrange this with a member of our team.

If you decide to return the bike yourself, please make sure you get a proof of return as we cannot be held responsible for the goods lost or damaged in transit.

No refunds can be made until the goods are received and checked by our team so there may be a slight delay in processing your return.

Please see the exceptions to this returns policy outlined below.

What if I have custom build mountain bike?

When ordering a Custom Mountain Bike, you will be liaising at length with a member of our team to ensure the full specification is agreed and signed off by both parties in writing. Once agreed a non- refundable 50% deposit is taken so the build can commence. Changes to specification can be made along the way through discussions with the member of staff involved with your project and so your total build cost can fluctuate, this is no problem, however, if you decide to cancel the build completely you will lose your deposit. If the reason for the cancellation is unexpected we may be able to release some of the components to the value of your deposit back to yourself, this will be at the discretion of the shop manager.


Special order Bikes & Frames?

The following special orders are non-refundable items:

  • All bike frame orders are specifically ordered for you and therefore cannot be refunded.
  • All bikes / frames that are modified from the point of purchase are classified as a special order. For example, if you have selected specific parts to be fitted to your bike, have upgraded parts direct from the manufacturer such as rear shocks or have agreed to have an Invisi Kit fitted this would be classed as a special order.
  • Another reason your bike may be classed as a ‘special order' could be if you are ordering a bike that is not from our normal stock, for example if it is a particularly big or small size that we do not normally carry. 


You will always be informed in writing if your purchase falls under a ‘special order’ category and if for any reason after receiving the email you decide you do not want to proceed you will have 24 hours to cancel and still get any paid monies returned. 


What if I am a non-UK resident and I want to return my purchase?

If you need to return your bike from overseas, please contact us and we will discuss the most cost-effective way of shipping your bike. The returns policy remains the same as for UK customers, only the cost of returning an unwanted bike will differ and will be calculated on an individual basis.


What if my non-bike product has been delivered and I have changed my mind?

Items must be returned within 7 days of purchase.

Items must:

  • Be returned in the package they arrived in.
  • Be returned undamaged and unused.
  • Be returned in a resealable condition.
  • Include your contact details inside the box

Posting fees will not be covered by MTB Monster LTD.


Where do I return my items to?


Returns Department

Unit 4A Fairfield Business Park,

Longsight Road, 

Clayton Le Dale, 

Lancashire, BB2 7JA

All items must be inspected before they are refunded or replaced, and this can take up to 7 working days from being received. If you have any queries, please contact us.

Please Note – In purchasing from MTB Monster you are aware that if for any reason you need to return your bike it is your responsibility to obtain the necessary packaging and wrap the bike so that it is secure during transit. We advise you keep your original packaging in case it is needed again. If you are unsure for any reason on how to do this please contact us for advise.


Section 2 - WARRANTY


I have a warranty issue what do I do?

If you find yourself needing to return an item for a warranty inspection, you can fill in our warranty form here. This mailbox is checked regularly by a member of our mechanics team so you can be sure of a timely response. We will support you throughout the warranty process by generating returns where needed and liaising directly with the manufacturers on your behalf. You will be kept informed at every stage until your warranty is complete.

If an item is to be returned as a potential warranty issue, we will always do our very best to advise you as to our thoughts on the outcome of the inspection in advance. It is important to be aware that if an item is declined warranty by the manufacturer then you will be charged the return postage and any other costs involved. Please be aware that it is not MTB Monster Limited who determine if an item is warranty, this decision lies with the manufacturer themselves and we have no control over it.

Although we may need to have the product returned to MTB Monster Limited for inspection by a mechanic, most component warranties can be processed by your local authorised service centre. This can reduce the time taken to get the warranty processed while also saving any costs involved sending an item back to us. 

Please Note: If you choose to use a shop local to yourself to have warranty work carried out, any warranty parts will normally be replaced free of charge by the manufacturer (check with the shop first). However, MTB Monster Limited will not contribute in any way to the costs involved in the labour part of the warranty or any investigational work carried out by another bike shop. If you choose to use a local shop they will charge you for labour & postage expenses as a result of the warranty work. Please be aware if you choose to use a local bike shop MTB Monster are not involved in the warranty work and have no influence on decisions or timescales made by the shop or manufacturer and MTB Monster are not liable for the work carried out by another shop. It is your responsibility to check that the shop is a authorised dealer of the brand in question and is suitabley qualified to carry out the work.

Any potential warranty issue that does need to be returned it is done so at the expense of the customer. A collection can be made through MTB Monster at a charge of £50. We will request photos of the condition of the bike prior to collection so that in the unlikely event any damage occurs in transit this is easily identified.

What is covered under warranty?

Most bikes and components are covered under warranty by the manufacturer.

Component warranties usually vary from 6 months to 3 years, these are specific to the manufacturer and details can be found in the product manuals or, on the manufacturer’s website. Bosch systems for electric bikes have a 2-year warranty.

Frames are usually warrantied for approximately 2-5 years and often lifetime warranties are offered if frames are registered. If this is offered, you can do this by visiting the manufacturers website and registering your bike after you have purchased the bike.  This timeframe of warranty is determined by the manufacturer. To view the details of a brands specific bike frame warranties, please choose a brand from the list below to be directed to their website where you can view up to date information, if you have any questions, or have an issue with the link below please contact us

To view the details of a brands specific bike frame warranty, please choose a brand from below for more information:




nukeproofbutton.jpg yetibutton.jpg go-cycle-button-.jpg
transition-button-1.jpg whyte-button.jpg trek-button.jpg


Below is a list of scenarios that are not covered under warranty, this list is not exhaustive but highlights the main situations when warranty is not applicable:

  • Stripped pedal threads. When you receive your new bike, you will need to fit the pedals make sure you take your time and ensure you have the right pedal for each crank arm. Do not continue to thread a pedal if it is not going in easily. 
  • Misuse of a bike
  • Damage from causes apart from defects in material. E.g., if damage is caused by crashing your bike, it will not be covered under warranty.
  • Normal wear and tear. Components may show signs of wear and tear in less than two years depending on amount of use, type of use etc. Some components can be expected to reach the end of their normal lifespan within this timeframe.
  • Damage to products which have been improperly installed or repaired.
  • Products that have been modified, neglected or poorly maintained.
  • Electric bikes that have been derestricted; this will be evident upon diagnostics testing
  • Compensation for any inconvenience caused (such as time & traveling expenses) which can be associated to the repair or warranty of a bike. Additionally we would not cover the costs incurred if you choose to hire a bike whilst waiting for an investigation / resolution to take place
  • Riding the bike in a manner in which it was not intended for.

Ultimately whether or not an item is covered under warranty, is down to the individual manufacturer