Fuel-99xoaxs-blk-1
Fuel-99xoaxs-silv-1
Fuel-99xoaxs-red-1
Fuel-99xoaxs-blk-1
Fuel-99xoaxs-silv-1
Fuel-99xoaxs-red-1

Top Fuel 9.9 X0 AXS Gen 4 2025

£8,500.00

Trek Top Fuel 9.9 X0 Gen 4 2025The Top Fuel 9.9 X0 AXS Gen 4 is an ultra-light and capable carbon trail bike that's built for soaring up climbs and rallying over miles of singletrack. This top-level build delivers the performance you want, with a RockShox Ultimate suspension package (120 — Read More

GTIN (UPC): 25TREKFUEL99XOAXSGEN4 Categories: , , ,

Spread the cost from £212.50 monthly*

Buying Guides

Description

Trek Top Fuel 9.9 X0 Gen 4 2025

The Top Fuel 9.9 X0 AXS Gen 4 is an ultra-light and capable carbon trail bike that’s built for soaring up climbs and rallying over miles of singletrack. This top-level build delivers the performance you want, with a RockShox Ultimate suspension package (120 mm/130 mm) and SRAM’s wireless X0 AXS transmission that shifts smooth and easy, especially under load. It’s topped off with carbon wheels to keep your ride light from top to bottom.

It’s right for you if…

You want the best carbon trail bike with all-mountain capability, climbing efficiency and components to match. You don’t mind spending a little extra to get the ultra-clean shifting of SRAM’s X0 AXS wireless transmission and an upgraded RockShox Ultimate suspension package is a must.

The tech you get

An OCLV Mountain Carbon frame with a 4-way Mino Link lower shock mount for tweaking geometry and suspension leverage rate. A 130 mm RockShox Pike Ultimate fork with DebonAir spring and Charger 3.1 RC2 damper, plus 120 mm of rear travel from a RockShox Deluxe Ultimate RCT shock. A wireless SRAM X0 AXS transmission, SRAM Level Silver Stealth 4-piston hydraulic brakes, RockShox Reverb AXS dropper post and tubeless-ready Bontrager Line Pro 30 carbon wheels.

The final word

When you’re after the best all-mountain carbon ride, reach for Top Fuel X0 AXS 9.9 Gen 4. With an ultra-light frame, carbon wheels and SRAM X0 wireless transmission, it delivers everything you want on dirt. Plus, it’s built with a 4-way Mino Link lower suspension mount for taking control of your geometry and suspension feel.

Why you’ll love it

  1. The Top Fuel Gen 4 delivers with an intensely lightweight build, improved in-frame storage and more adjustability for all kinds of rides and riders
  2. With 120 mm rear and 130 mm front RockShox Ultimate suspension, it delivers a well-balanced ride that stays efficient on the ups and playful on descents
  3. The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
  4. In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes and snacks
  5. It’s more upgrade-ready than ever, with room for bigger 140 mm forks and longer-stroke shocks for up to 130 mm of rear travel, plus room for extra-long dropper posts

Specification

Frame

OCLV Mountain Carbon, internal storage, tapered head tube, internal guided routing, downtube guard, OCLV Next rocker link, Mino 4 link, ABP, Boost148, 120 mm travel
Rear Shock

RockShox Deluxe Ultimate RCT, 185 mm x 50 mm
Handle Bars

Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 45mm stem length
Brakes

SRAM Level Silver 4-piston hydraulic disc
Rear Derailleur

SRAM X0 Eagle AXS, T-Type
Rear Hub

Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle
Front Hub

6-bolt, Boost110, 15 mm thru-axle, 29"
Shift Levers

SRAM AXS POD
Cassette

SRAM Eagle XS-1295, T-Type, 10-52, 12-speed
Chainset

SRAM X0 Eagle, DUB, 30T steel, T-Type, 55mm chainline, 170 mm length
Wheels

Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready,
Front Tyre

Bontrager
Rear Tyre

Bontrager
Saddle

Verse Short Pro, carbon rails, 145 mm width
Seat Post

RockShox Reverb AXS, 170 mm travel, wireless, 34.9 mm, 480 mm length (Small – 100mm Travel & 340mm length)
Season

2025

Add bike + kit to your basket

Add bike + kit to your basket

Checkout with V12 Finance with online acceptance

Checkout with V12 Finance with online acceptance

We contact you to confirm order and arrange shipping

We contact you to confirm order and arrange shipping

Please use our calculator below to help you see what finance options are available. To apply for finance, please select this option at the checkout.
Step 1:Choose your finance option

Please specify the finance option that you wish to choose.

From £212.50 per month.

Step 2:Choose your deposit amount

Please specify the deposit amount that you wish to pay.

The accepted value is between £850.00 and £2,550.00

Representative finance example

Amount of credit £7650.00. 36 monthly repayments of £212.50. Representative APR 0.00%. Total amount repayable £7650.00.
APR Fixed 0.00%
Installment Amount £212.50/month
Repayment Term 36 months
Total Interest Charged £0.00
Deposit Amount £850.00

Cycle to work scheme

Wheelbase has teamed up with CycleScheme, Bike2Work Scheme, Green Commute Initiative, as well as, Vivup, Gogeta, Cycle Solutions & Halfords to offer PAYE employees a healthier way to commute. The scheme stems from the U.K Government's Green Transport Plan which is designed to get more people out and about riding bikes and reaping the multitude of personal and environmental benefits!

To make a purchase using a Cycle To Work Voucher, please submit an enquiry using this form. We are happy to reserve the bike for up to two weeks with a holding deposit whilst you await your voucher. If you would like us to go ahead and set up your order, please submit a shipping address and phone number. These details are required to process the order. We will make contact to confirm your order and advise the next steps.

If you would like more information, feel free to submit the enquiry without a shipping address.

Find out more

Enquire

    Price Match

    Seen it cheaper elsewhere?
    At Wheelbase we understand that price matters and we are committed to offering exceptional service to all our customers, both new and old. If you find a price from a recognised retailer that is cheaper, please get in touch and we will do our best to match it.
    Please contact us using this form. We are open to having a discussion, so why not try us and see?

    Find out more

    Enquire

      You have not viewed any product yet.