SURLY Singleator Chain Tensioner - Black Compatio_Enriched One oversized spindle to work

One oversized spindle to work across every bottom bracket standard

3M Scotchlite reflectors

Shimano SF-MX30 Freewheels

The designs and materials have passed extensive life and ultimate strength tests

these wheels feature both Rim Brake and Disc Brake compatibility

SURLY Singleator Chain Tensioner - Black Compatio_Enriched One oversized spindle to workSurly Singleator mounts right up to your derailleur hanger and provides a simple, effective, and adjustable means of tensioning the excess chain slack found in vertical dropout single speed drivetrains. Triple sealed spring, large cog capacity and chain guides Stainless steel pivot bushing Includes two springs for upward or downward tension adjustment Do not use with a coaster brake, fixed gear, multi cog or multi ring drivetrains Source: Quality