STFU Bike Trail (Fits Up To 12spd)

STFU drivetrain damping devices are designed to keep your bike running quiet and efficient while minimizing wear.

- Includes two adjustable modules that mount to your swing arm.
- Dual compound - hard plastic insert keeps the unit stiff and in place with soft over-mold for sound damping.
- Suits Trail Bikes with 1X gearing
- 9 - 13 speed with up to a 52 tooth cassette
- Trim to length, fits most bikes
- Light weight and silent