Alfine chain tensioner for use with vertical dropouts
Stable chain tension is achieved by using a single pulley guide
For use with single front chainring
For use with 16-23T rear sprockets

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Alfine chain tensioner for use with vertical dropouts
Stable chain tension is achieved by using a single pulley guide
For use with single front chainring
For use with 16-23T rear sprockets


  • Shimano SPARE PART Alfine chain tensioner
  • Shimano article number I-CTS510S
  • For use with single front chainring
  • Vertical dropouts.
  • Shimano Alfine Chain Tensioner Single Speed Ct S510