Maximum seating comfort

Standby Flood mode when slow or stopped (up to 15 minutes) means you can always find your way or make camp

Installed using standard 16-notch bottom bracket tool

an OPTICAL GEAR DISPLAY in a durable assembly

No matter how wet the weather

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