ALFINE Chain Tensioner

Description |

The Shimano Alfine Double Pulley Chain Tensioner CT-S500 is designed for Shimano Alfine equipped bicycles that need reliable chain management with an internal gear hub setup. It uses a double pulley design to help maintain proper chain tension and is intended for builds where chain growth or drivetrain setup requires a tensioner.

Shimano states that the CT-S500 can accommodate a front chainring difference of 16 teeth and works with sprocket sizes from 18 to 20 teeth. It is a practical solution for Alfine bikes that need clean, dependable chain control.

Features |

• Double pulley chain tensioner for Shimano Alfine bikes
  
• Designed to maintain proper chain tension on compatible internal gear hub setups
  
• Accommodates a front chainring difference of 16 teeth
  
• Compatible with 18 to 20 tooth sprockets
  
• Available in silver or black
  
• Replacement pulley set listed as RD 5701

Specs |