Maximum seating comfort

No matter how wet the weather

MatchMaker X compatible

Padded on all sides for frame finish protection

Compact and easy maintenance

SURLY Singleator Chain Tensioner - Black Compatio_Enriched Maximum seating comfortSurly 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