Trek 2025 FX Sport SL 5 Fitness Bike

1643-5324008

FX Sport SL 5 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. It has an upgraded high-quality drivetrain, hydraulic disc brakes, and tubeless-ready rims making it 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 expect your bike to grow with you as you advance in speed and distance.

The tech you get

A lightweight 400 Series OCLV Carbon frame and fork, a 1x SRAM Apex drivetrain with a wide range of gearing, hydraulic disc brakes, hidden fender mounts, a lightweight tubeless-ready Bontrager Paradigm alloy wheelset, wide, fast-rolling Bontrager GR1 Expert gravel tires, and a vibration-absorbing handlebar with ergonomic grips.

The final word

FX Sport SL 5 has a light and fast carbon frame and quality parts that will hold up over serious miles, including an upgraded SRAM Apex 1x drivetrain.