Shimano Alfine CT-S500 Chain Tensioner Black EC49/38.1 All Contact tread shape has

All Contact tread shape has smooth and predictable transition from center to side elongated sidewall surface reduces treadcuts

Largest Cog 34 Color Carbon Rear Der/Shifter Compatibility Campy 12-Speed Chorus/Record/Super Record 2019+ Rear Derailleur Mount Type 10x1 Standard Drivetrain Speeds 12 Chain Wrap Capacity (teeth) 37 Cage Length Medium

8 Drop Bend Style Compact Drop Bend Style Anatomic Cable Routing External Material Aluminum Width Measurement Center Width 42 Defined Color Black Clip-on Compatible Yes

Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts)

Sold as a pair

Shimano Alfine CT-S500 Chain Tensioner Black EC49/38.1 All Contact tread shape hasShimano Alfine CT S500 Chain Tensioner Black. Shimano Alfine CT S500 Chain TensionerNot for use with coaster brake or fixed gear hubs 20 tooth max rear sprocket 16 tooth chainwrap capacity 41. 8mm chainline Uses washers on the mounting bolt for 5mm of chainline adjustability TECH SPECS Color Black