The Chain Keeper is a guide to keep your chain right where it belongs. Mounted in place of a front derailleur, the Chain Keeper works with single chain ring drivetrains using a narrow chain. The chain block surrounds the chain as it meets the chain ring and prevents it from skipping off.
- Clamp diameter: 28.6 mm (also available by special order in 31.8mm and 35mm sizes)
- Finish: Anondized Black (also available by special order in silver, green and purple
- Material: 6061 Aluminum
- Weight: 69g
- Chainline Range: 34-55mm
Product Story: The Chain Keeper clamps on to the seat tube of the frame. The portion of seat tube where the clamp mounts must have a circular profile and a diameter of 28.6, 31.8, or 35.0mm, (+/-0.5mm).
Designed with adjustability in mind, the Chain Keeper can accommodate a range of chainline measurements and chain ring sizes.
Note: This is not designed for downhill, freeride, or big hit use.