Shimano

Alfine CT-S500 Chain Tensioner Silver

A simple yet effective way to tension your chain. This is designed for use with the Alfine internally geared hubs but can be used in other single speed applications. One added bonus is that the standard Shimano pulleys are replaceable!

Shimano Alfine CT-S500 Chain Tensioner.

• 20 tooth max rear sprocket
• 16 tooth chainwrap capacity
• 41.8mm chainline
• Uses washers on on the mounting bolt for 5mm of chainline adjustability