Trek FX Sport SL 4 - Carbon Fitness Bike 2026 | matte onyx carbon
The FX Sport SL 4 is a carbon fitness bike for anyone who wants to combine the speed of a lightweight road bike with the comfort and control of a flat bar bike. The 1x drivetrain simplifies shifting without compromising on gear range. This makes this high-performance bike suitable for a wide range of uses, from training rides to fast group rides.
Frame: 400 Series OCLV Carbon, internal cable routing, 3S chain guide, DuoTrap S compatible, mudguard eyelets, flat mount disc brake mount, 135x5 mm ThruSkew
Size: 28" - XS - 52cm, S - 54cm, M - 56cm, L - 58cm, XL - 61cm
Fork: Carbon, hidden fender mounts, flat mount disc brake mount, 100x5mm thru-skew axle
Handlebar: Bontrager Satellite Plus IsoZone, aluminum, 31.8 mm, 15 mm rise, width 600 mm (XS, S) / 660 mm (M, L, XL)
Grips: Bontrager Satellite Plus IsoZone, screw-on, ergonomic
Brakes: Shimano hydraulic disc brakes, MT201 brake levers, UR300 brake calipers / Shimano RT10, Center Lock disc mount, 160 mm
Shift levers: Shimano CUES U6000 with optical gear indicator, 10-speed
Rear derailleur: Shimano CUES U6000 GS
Crankset: Prowheel, aluminum; narrow-wide chainring (42 teeth), 175 mm crank arm length
Cassette: Shimano CUES LG300, LinkGlide, 11-48 teeth, 10-speed
Chain: Shimano LG500
Front hub: Formula CL-51, aluminum, 100x5mm quick release axle
Rear hub: Formula CL-52, aluminum, 135x5mm quick release axle
Rims: Bontrager Paradigm, tubeless ready, 32 holes, 21mm inner width, Presta valve
Tires: Bontrager GR1 Expert, Hard-Case Lite, wire bead, 60 TPI, 700 x 40 mm
Saddle: Bontrager H1
Seatpost: Bontrager, aluminum, 27.2 mm, 12 mm offset, 330 mm length
Weight: 10.5 kg
Max. system weight: 136 kg
