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The Top Fuel 9.9 XX 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.
The Top Fuel 9.9 XX 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.
Trek

2025 Trek Top Fuel 9.9 XX AXS Gen 4 Mountain Bike In Axinite Flip

£10,000.00
Size Guide
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Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined

Hassle free returns

RETURNS POLICY

If you'd like to exchange or return your order please include your name and order number with the return, our returns address is:

Returns
Activ Cycles
Unit 1&2 Kingfisher Business Park
Henwood
Ashford
TN24 8DG

Subject to the terms set out below we are happy to offer a refund or exchange on all goods except goods which are special orders or nutrition products, or where we have expressly advised you that there is no right to return the goods ordered (save in the event the goods are faulty) provided the goods are returned to us within 14 days of delivery to you.

If you return goods to us and request a different size or alternative product we will send it out free of charge (subject to stock availability). If you require a refund (or the replacement item is not in stock) we aim to process refunds within 2 working days of receipt of the goods. It is your responsibility to ensure that the item is returned to us safely and securely and in saleable condition.

Refunds will be processed using the same method of payment used for the original purchase. Due to the high incidence of fraud, we regret that we are unable to offer any refund without a valid receipt/delivery note.

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Your rights to return goods are protected under the Consumer Protection (Distance Selling) Regulations 2000 which can be found at theConsumer Protection (Distance Selling) Regulations 2000 (legislation.gov.uk).

2025 Trek Top Fuel 9.9 XX AXS Gen 4 Mountain Bike In Axinite Flip

Season:2025

Brand:Trek

Code:46146RED

The Top Fuel 9.9 XX 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 lightest wireless XX 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-lightweight benefits of SRAM's XX 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. An ultra-light wireless SRAM XX AXS transmission, SRAM Level Ultimate 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 the Top Fuel 9.9 XX AXS Gen 4. With an ultra-light frame, carbon wheels and SRAM XX 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.

Features:
  • 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
  • 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
  • The 4-way Mino Link makes it easy to adjust your geometry or leverage rate for how and where you want to ride
  • In-frame storage with an improved BITS bag system makes it easy to stash tools, tubes and snacks
  • 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
Technical Information
  • 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
  • Shock
    RockShox Deluxe Ultimate RCT, 185 mm x 50 mm
  • Max Compatible Fork Travel
    140 mm
  • Wheel Front (Size: S)
    Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 27.5"
  • Wheel Front (Size: M, ML, L, XL)
    Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15 mm thru-axle, 29"
  • Wheel Rear
    Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless-Ready, Rapid Drive 108, 6-bolt, Boost148, 12 mm thru axle
  • Skewer Rear
    Bontrager Switch thru-axle, removable lever
  • Tyre (Size: S)
    Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 27.5x2.40"
  • Tyre (Size: M, ML, L, XL)
    Bontrager Montrose RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
  • Tyre (Size: M, ML, L, XL)
    Bontrager Gunnison RSL XT, Tubeless-Ready, triple compound, aramid bead, 120 tpi, 29x2.40"
  • Tyre Part
    Bontrager TLR sealant, 180 ml/6 oz
  • Rim Strip
    Bontrager TLR
  • Max Tyre Size
    Frame: 29x2.50", Fork: See manufacturer
  • Battery
    SRAM eTap battery pack (with charger)
  • Rear Derailleur
    SRAM XX SL Eagle AXS, T-Type
  • Crank
    SRAM XX Eagle, DUB, 30T, T-Type, 55 mm chainline, 170 mm length
  • Bottom Bracket
    SRAM DUB MTB Wide, 73 m, BSA threaded
  • Cassette
    SRAM Eagle XS-1299, T-Type, 10-52, 12-speed
  • Chain
    SRAM XX Eagle, T-Type, 12-speed
  • Max. Chainring Size
    1x: 34T, min 30T
  • Saddle
    Verse Short Pro, carbon rails, 145 mm width
  • Seatpost (Size: S)
    RockShox Reverb AXS, 100 mm travel, wireless, 34.9 mm, 340 mm length
  • Seatpost (Size: M, ML, L, XL)
    RockShox Reverb AXS, 170 mm travel, wireless, 34.9 mm, 480 mm length
  • Handlebar/Stem (Integrated) (Size: S)
    Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 35 mm stem length
  • Handlebar/Stem (Integrated) (Size: M, ML, L, XL)
    Bontrager RSL Integrated handlebar/stem, OCLV Carbon, 27.5 mm handlebar rise, 820 mm width, 0-degree stem rise, 45 mm stem length
  • Brake
    SRAM Level Ultimate 4-piston hydraulic disc
  • Brake Rotor
    SRAM HS2, 6-bolt, 180 mm
  • Rotor Size
    Max brake rotor sizes – Frame: 200 mm, min 180 mm, Fork: see fork manufacturer
  • Weight
    M - 12.85 kg / 28.33 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 Information
Professional Opinion
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