Trek FX Sport SL 4 Bike Size:S Transmitting the power with less

Transmitting the power with less effort

21% spandex

3M™ Thinsulate™ Insulation – Keeps feet warm and responsive even in extremely cold and damp conditions

with PrimaLoft® insulation for added warmth and comfort on the lift and on the slopes

Warmer than a GORE-TEX® Pro pant because of the brushed flannel backer

Trek FX Sport SL 4 Bike Size:S Transmitting the power with lessFX Sport SL 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.