Other

Surly Stainless Steel Track Lockring. - Fits all but Campagnolo, Miche or Phil Wood - 5mm thick with 0.65mm lip for maximum thread and lockring wrench contact

Surly 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