Trek FX 4 Sport Carbon - 2022

FX Sport 4 is a carbon fiber fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar. An IsoSpeed decoupler smooths out rough roads and the 1x11 drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.

Why you'll love it:
1. The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
2. You get the superior ride quality of carbon without the bank-breaking price
3. IsoSpeed—a decoupler at the seat tube/top tube junction that absorbs fatiguing bumps from the road so you can stay stronger longer
4. On your left, roadie! This fitness bike is more than capable of taking on speedy group road rides
5. You can pair FX Sport with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S


Frameset
Frame 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 142x12mm thru axle
Fork FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 405mm axle-to-crown, 100x12mm thru axle

Wheels
Hub front Formula alloy, centerlock disc, 100x12mm thru-axle
Skewer front Bontrager Switch thru axle, removable lever
Hub rear Shimano RXC400, centerlock, Shimano 11-speed freehub, 142x12mm thru axle
Skewer rear Bontrager Switch thru axle, removable lever
Rim Bontrager Tubeless Ready Disc, 32-hole, Presta valve
Spokes 14g stainless steel
Tire Bontrager R1 Hard-Case Lite, wire bead, 60 tpi, 700x32c
Max tire size 35c without fenders, 32c with fenders

Drivetrain
Shifter Shimano RS700, 11 speed
Rear derailleur Shimano GRX RX812, long cage, 42T max cog
*Crank Size: XS, S
Shimano GRX RX600, 40T ring, 170mm length
Size: M, L, XL
Shimano GRX RX600, 40T ring, 175mm length
Bottom bracket Shimano BB71, 86.5mm, PressFit
Cassette Shimano SLX M7000, 11-42, 11 speed
Chain Shimano HG601
Pedal Wellgo M141, resin body, alloy cage

Components
Saddle Bontrager H1
Seatpost Bontrager alloy, 27.2mm, 12mm offset, 330mm length
*Handlebar Size: XS, S
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 600mm width
Size: M, L, XL
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise, 660mm width
Grips Bontrager Satellite IsoZone Plus, lock-on, ergonomic
*Stem Size: XS
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree, 90mm length
Size: S, M
Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 100mm length
Size: L, XL
Bontrager Elite, 31.8mm clamp, Blendr compatible, 7 degree, 110mm length
Headset 1-1/8'' threadless, sealed cartridge bearings
*Brake Size: XS, S, M, L, XL
Shimano hydraulic disc, MT201 lever, UR300 caliper
Size: XS, S, M, L, XL
Shimano MT201 hydraulic disc, flat mount, 160mm rotor
Brake rotor Shimano RT10, centerlock, 160mm


Weight
Weight M - 9.55 kg / 21.06 lbs
Weight limit This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).