TREK FX SPORT 4 CARBON

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. The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides.

It's right for you if...
You're ready to log big miles, and you prefer the feel of a flat handlebar to the drop bars that come stock on most road bikes. You prioritize comfort and performance equally, and want the simplicity a 1x drivetrain provides.

The tech you get
A lightweight 400 Series OCLV Carbon frame and fork, a Shimano CUES 10-speed drivetrain with a wide-range cassette, Shimano hydraulic disc brakes for all-weather stopping power, a lightweight tubeless ready wheelset, wide, fast-rolling Bontrager GR1 Expert gravel tires, and a vibration-absorbing handlebar and ergonomic grips.

The final word
Fast, capable, comfortable. FX Sport 4 has a road-smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain.

Why you'll love it
- The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter
- You get the superior ride quality of carbon without the bank-breaking price
- On your left! This fitness bike is more than capable of taking on speedy group road rides
- It's easy to accessorize with fenders, lights, and more!



Specifications

Frameset
Frame: 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat-mount disc, 135x5 mm ThruSkew
Fork: Carbon, hidden fender mounts, flat mount disc, 100x5mm thru-skew

Weight
Weight: M - 10.50 kg / 23.15 lbs
Weight limit: This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).

Drivetrain
Shifter: Shimano CUES U6000 w/optical gear display, 10 speed
Rear derailleur: Shimano CUES U6000 GS
Crank: Prowheel alloy, 42T narrow-wide ring, 175 mm length
Cassette: Shimano CUES LG300, LINKGLIDE, 11-48, 10 speed
Chain: Shimano LG500
Pedal: Bontrager City pedals
Max chainring size: 1x: 44T

Wheels
Hub front: Formula CL-51 alloy, 100x5mm QR
Skewer front: 135x5mm bolt-on
Hub rear: Formula CL-52 alloy, 135x5mm QR
Skewer rear: 169x5mm bolt-on
Rim: Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve
Tire: Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40 c
Max tire size: 42mm without fenders, 40mm with fenders

Components
Saddle: Bontrager H1
Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Handlebar:
Size: XS, S - Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 600 mm width
Size: M, L, XL - Bontrager Satellite Plus IsoZone, alloy, 31.8 mm, 15 mm rise, 660 mm width
Grips: Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Stem:
Size: XS - Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 90 mm length
Size: S, M - Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 100 mm length
Size: L, XL - Bontrager Elite, 31.8 mm, Blendr-compatible, 7-degree, 110 mm length
Brake: Shimano hydraulic disc, MT201 lever, UR300 caliper
Brake rotor: Shimano RT10, CenterLock, 160 mm
Rotor size: Max brake rotor sizes: 160mm front & rear