1. Loading...


Top Fuel C Frameset

£2,900.00 Model 23831

Top Fuel C is a carbon full-suspension cross country frameset built for speed and efficiency on fast singletrack rides and XC courses. A lightweight OCLV Mountain Carbon main frame and stays, and 100 mm of FOX Factory rear suspension make this carbon XC frameset worthy of racing at any level.

Search shop availability

More options

It's right for you if...

Speed on singletrack is what you're after. You know a high-quality carbon frame can make a major difference in race-day performance, so you're looking to build up an XC bike that climbs like a rocket, flies on flats and is still comfortable when the trail turns rough.

The tech you get

A trail-tough OCLV Mountain Carbon frame with 100 mm of travel, a FOX Factory shock with a remote lockout and an included headset make for a solid start on the build that may just bring you to your next podium finish.

The final word

Light on climbs, efficient and comfortable on rough trails and always fast. The Top Fuel C frameset lives to tear through singletrack trails on your fastest XC rides ever.

favorite_borderWhy you'll love it

  1. You get a full carbon frame that's super light and super stiff for ultimate efficiency
  2.  More than fast, it's also capable: build it up the right way and this race-ready frameset can double as your light trail bike on more rugged terrain
  3. Internal cable routing opens the door for upgrades like a dropper post



  • Frameset

    OCLV Mountain Carbon main frame & stays, ABP, Full Floater, EVO link, tapered head tube, Mino Link, MicroTruss, Control Freak internal routing, Carbon Armor, PF92, Boost148 & G2 Geometry on 29ers, 100 mm travel
    Rear suspension
    Fox Factory Float DPS, 2-position remote, Kashima Coat, tuned by Trek Suspension Lab, 6.5x1.5˝
  • Components

    Head set
    FSA IS-2, 1-1/8˝ top, 1.5˝ bottom
  • Weight

    M - 2.09 kg / 4.6 lbs
    Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider and cargo) of 136 kg (300 lb).
We 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, colors, and materials.
Bike and frame weights are based on Trek pre-production painted frames at the time of publication. Weights may vary in final production

Sizing & fit

Proper bike fit is essential for best performance and comfort. Any size and geometry measurements shown on trekbikes.com are for general comparison purposes only. To find your perfect fit, visit an authorised Trek retailer, where an expert skilled at sizing will help you find the appropriate bike and size for your individual needs.


Rider Height


All measurements provided in cm unless otherwise stated.

Frame size number Frame size letter Geometry position Wheel size A — Seat tube B — Seat tube angle Effective seat tube angle C — Head tube length D — Head angle E — Effective top tube F — Bottom bracket height G — Bottom bracket drop H — Chainstay length I — Offset J — Trail K — Wheelbase L — Standover M — Frame reach N — Frame stack
18.5 in ML Low 29" 44.5 68.5° 74° 9.0 70.0° 60.9 33.0 3.9 43.5 5.1 8.0 112.7 71.9 44.3 57.7
18.5 in ML High 29" 44.5 69.4° 74.9° 9.0 70.9° 60.6 34.1 2.8 43.2 5.1 7.4 112.5 72.9 45.2 57.0
19.5 in L Low 29" 47.0 68.5° 74.0° 10.0 70.0° 62.5 33.0 3.9 43.5 5.1 8.0 114.4 71.9 45.7 58.7
19.5 in L High 29" 47.0 69.4° 74.9° 10.0 70.9° 62.3 34.1 2.7 43.2 5.1 7.4 114.3 72.9 46.6 58.0

Product Compare Rack

Start comparison
United Kingdom / English
You’re looking at the United Kingdom / English Trek Bicycle website. Don’t worry. We’ve all taken a wrong turn before. View your country’s Trek Bicycle website here.