Trek FX Sport SL 4

Trek FX Sport SL 4 Overview

The Trek FX Sport SL 4 is a gravel bike built with a 400 Series OCLV Carbon frame, internal routing, 3s chain keeper, DuoTrap S compatibility, fender mounts, flat mount disc fitment, and a 135x5mm ThruSkew. It uses a carbon fork with hidden fender mounts, flat mount disc fitment, and a 100x5mm thru-skew.

The drivetrain uses a Shimano CUES U6000 10-speed shifter with optical gear display and a Shimano CUES U6000 GS rear derailleur. A Prowheel alloy crankset with a 42T narrow-wide ring pairs with a Shimano CUES LG300 LINKGLIDE 11-48 10-speed cassette and Shimano LG500 chain. Bontrager City pedals are included, and the frame supports a maximum 1x chainring size of 44T.

The wheel setup includes Formula alloy hubs, Bontrager Paradigm Tubeless Ready rims, and Bontrager GR1 Expert 700x40c tires. The tires use Hard-Case Lite construction, wire bead, and 60 tpi casing. Maximum tire size is 42mm without fenders and 40mm with fenders.

For braking, the bike uses Shimano hydraulic disc brakes with MT201 levers, UR300 calipers, and Shimano RT10 centerlock 160mm rotors. Finishing components include a Bontrager H1 saddle, Bontrager alloy seatpost, Bontrager Satellite Plus IsoZone alloy handlebar, Bontrager Satellite IsoZone Plus ergonomic lock-on grips, and a Bontrager Elite Blendr-compatible stem.

Key Features of Trek FX Sport SL 4

• 400 Series OCLV Carbon frame with internal routing, fender mounts, flat mount disc fitment, DuoTrap S compatibility, and 135x5mm ThruSkew.
• Carbon fork with hidden fender mounts, flat mount disc fitment, and 100x5mm thru-skew.
• Shimano CUES U6000 10-speed shifter includes an optical gear display.
• Prowheel alloy 42T narrow-wide crankset works with a Shimano CUES LG300 11-48 10-speed cassette.
• Bontrager Paradigm Tubeless Ready rims use a 32-hole construction, 21mm width, and Presta valve setup.
• Bontrager GR1 Expert 700x40c tires feature Hard-Case Lite construction and 60 tpi casing.
• Shimano hydraulic disc brakes use MT201 levers, UR300 calipers, and 160mm Shimano RT10 centerlock rotors.
• Bontrager Satellite Plus IsoZone handlebar and ergonomic lock-on grips complete the cockpit setup.

Ride Use

This bike is categorized for gravel riding. Its carbon frame, carbon fork, fender mounts, 700x40c Bontrager GR1 Expert tires, Shimano CUES 10-speed drivetrain, and Shimano hydraulic disc brakes support its gravel bike category. The flat Bontrager Satellite Plus IsoZone handlebar and Bontrager City pedals are included in the complete build.

Why Choose This Bike

The Trek FX Sport SL 4 combines a 400 Series OCLV Carbon frame, carbon fork, Shimano CUES 10-speed drivetrain, Shimano hydraulic disc brakes, and Bontrager Paradigm Tubeless Ready rims. Its Bontrager GR1 Expert 700x40c tires, Bontrager Satellite IsoZone Plus grips, Bontrager H1 saddle, and Matte Onyx Carbon, Gloss Crimson, or Crystal White color options complete a clean gravel bike build. The M size weighs 10.50 kg / 23.15 lbs, and Trek frames and full-suspension swing arms are covered for the lifetime of the original owner, while other parts are covered under Trek’s limited warranty.