Trek FX Sport 4 Bike

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.

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. On your left, roadie! This fitness bike is more than capable of taking on speedy group road ride
4. It's easy to accessorize with fenders, lights, and more!

Specifications 

Frameset: 

• Frame: 400 series OCLV carbon, IsoSpeed, internal routing, 3s chain keeper, DuoTrap S compatible, fender mounts, flat mount disc, 135x5mm thru axle
• Fork: Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc,

Wheels: 

• Hub front: Formula CL-51 alloy, 100x5mm QR
• Hub rear: Formula CL-52 alloy, 135x5mm QR
• Rim: Bontrager Paradigm, Tubeless Ready, 32-hole, 21 mm width, Presta valve
• Spokes: 14g stainless steel
• Tire: Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 tpi, 700x40c
• Max tire size: 42c without fenders, 40c with fenders

Drivetrain: 

• Shifter: Shimano Deore M4100, 10 speed
• Rear derailleur: Shimano Deore M5120, long cage
• *Crank: Prowheel alloy, 42T narrow-wide ring, 175 mm length
• Cassette: Shimano Deore M4100, 11-46, 10 speed
• Chain: KMC X10, 10 speed
• Pedal: Bontrager City Pedals

Components: 

• Saddle: Bontrager H1
• Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length
• 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: Promax DSK-927 hydraulic disc, flat mount, 160mm rotor
• Brake rotor: Max brake rotor size: 160mm