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Trek Top Fuel 8

Trek Top Fuel 8
  • Color: Matte Trek Black/Gloss Viper Red
  • Color: Purple Phaze/Dnister Black
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Full-suspension cross country mountain bikes have improved by leaps and bounds since the early 2000's, and many thought that perfection had been realized. But Trek had other ideas. The Top Fuel platform had been successful in many ways, but the suspension travel and other aspects of the bike seemed to limit riders looking for an "all-rounder" that would handle longer rides over rougher singletrack as well as race days. The Top Fuel 8 is built around an Alpha Platinum Aluminum frame, providing a strong chassis for effective power transfer while still keeping weight low. A press-fit PF92 bottom bracket ensures flex-free pedaling response during hard efforts. The frame's geometry is paired with a custom offset fork gives the Top Fuel 8 nimble handling at all speeds. A tapered head tube adds a precise steering feel, especially while charging through rock gardens. Even the frame's oversized downtube has been straightened out for lighter weight and improved strength. Preventing impacts on the downtube from the spinning fork crown during, er, rider error is a stem and headset insert called Knock Block. Trek's patented Active Braking Pivot (or ABP) rear suspension geometry allows for hard braking or furious pedaling without suspension movement or contraction. A magnesium rocker link found at the top of the suspension mount prevents torsional twisting while allowing the rear shock to respond better to hard bumps and rough landings. Refining the Top Fuel 8's geometry is easy, thanks to the adjustable Mino Links at the top of the seat stay arms. Two positions can change the bike's geometry for better handling over short, intense races or day-long marathon events on harsher trails. Fox supplies the air-adjustable Performance Float rear shock with 115mm of suspension travel. The suspension fork is an air-adjustable RockShox Recon Gold RL unit featuring a tapered steerer tube, 15mm thru-axle quick-release and 120mm of travel. Both fork and rear shock have a single remote lockout switch on the handlebar for hammering down fire roads. The fork and frame dropouts are designed with the new Boost110/148 wheel spacing in mind, adding torsional wheel stiffness for improved trail handling and feel.

The Trek Top Fuel 8 keeps high performance and verasatility equally in mind with its component list. SRAM's latest 12-speed NX Eagle shifter, NX Eagle rear derailleur and 11-50T NX Eagle cassette operate with incredible precision over a massive gearing range, even under hard pedaling loads. A SRAM NX Eagle crankset with a 32T chainring does power delivery duty. Bontrager's alloy Kovee Comp 23 wheelset is tubeless-ready and is shod with wider-than-usual 29x2.40" XR3 tubeless-ready Team Issue tires for confident grip in technical singletrack. Shimano's hydraulic disc brakes help reign in speed in all conditions, rain or shine. Bontrager also brings an Arvada saddle mounted on an alloy Line Dropper seatpost. A dropper post with bar-mounted remote isn't totally new to cross country mountain bikes, but the usefulness will be obvious at the first really steep descent.  An alloy Rhythm Comp stem and alloy Comp handlebar complete this epic-capable cross country machine.


Frame Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel
Fork RockShox Recon RL, Solo Air spring, Motion Control damper, TwistLoc remote, tapered steerer, 46mm offset, Boost110, 15mm Maxle Stealth, 120mm travel
Headset Knock Block Integrated, cartridge bearing, 1-1/8" top, 1.5" bottom
Rear Shock Fox Performance Float, 2-postion DPS damper, TwistLoc remote, tuned by Trek Suspension Lab, 190x45mm
Axles Front: 110x15mm
Rear: 148x12mm
Rims/Wheels Bontrager Kovee Comp 23, Tubeless Ready, 6-bolt
Hubs Bontrager alloy
Spokes Stainless steel
Tires Bontrager XR3 Team Issue, Tubeless Ready, Inner Strength sidewall, aramid bead, 120tpi, 29x2.40"
Crankset SRAM NX Eagle, DUB, Boost
Chainrings 32T steel ring
Bottom Bracket SRAM DUB, 92mm, PressFit
Chain SRAM NX Eagle, 12 speed
Rear Derailleur SRAM NX Eagle
Cassette/Rear Cogs SRAM PG-1230 Eagle, 11-50T, 12 speed
Shifters SRAM NX Eagle, 12 speed
Handlebars Bontrager Comp, alloy, 31.8mm, 15mm rise
Tape/Grips SRAM TwistLoc
Stem Bontrager Rhythm Comp, Knock Block, 31.8mm, 0 degree
Brake Levers Shimano hydraulic disc, MT501 lever
Brakes Shimano hydraulic disc, MT500 caliper
Saddle Bontrager Arvada, steel rails
Seat Post Bontrager Line Dropper, internal routing, 31.6mm

* Subject to change without notice.