Promax C-1 chain tensioners are the perfect upgrade for you race bike if you're looking to add a little colour to the rig, or if you are installing them as insurance against your axle slipping. If you have a frame without a inbuilt chain tensioner system, then you are risking going over the bars if your hub moves in the dropouts, using your face as a brake. Avoid the hospital and dentist with these budget friendly, and colourful alloy chain tensioners from Promax.
Specs:
- CNC-machined 6061-T6 aluminum
- For use with 3/8" and 10mm axles
- Two axle hole design
