Trek FX Sport SL 4 Fitness Bike 2026 Size:X-Small With an integrated hook-and-loop closure

With an integrated hook-and-loop closure

Steel: Premium

The Power Assist Bumper enforces heavier

a rear rack

Trek FX Sport SL 4 Fitness Bike 2026 Size:X-Small With an integrated hook-and-loop closureTrek FX Sport SL 4 Fitness Bike 2026 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