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Trek FX Sport 4 2023

$2,329.99

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 Deore 1x 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. This bike has a road -smoothing carbon frame and quality parts that will hold up over serious miles, including the simpler-shifting 1x drivetrain.

Specifications

*spec applies to all sizes unless otherwise noted

Frameset

Frame 400 series OCLV Carbon, internal routing, 3s chain keeper, DuoTrap S compatible, mudguard mounts, flat-mount disc, 135×5 mm ThruSkew
Fork FX Carbon, threadless alloy steerer, hidden fender mounts, flat mount disc, 5x100mm thru-skew
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
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, 27.2 mm, 12 mm offset, 330 mm 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 Promax DSK-927 hydraulic disc, flat mount, 160mm rotor