Wolf Tooth Aluminium Single Speed Cog - Shimano HG Splined - Black - Single Speed - 17T Back in Stock Compatible with Topeak TRI-BackUp series

Compatible with Topeak TRI-BackUp series and Omni-BackUp Elite hydration mounts

then you'll need a new Freehub body

short stems or stems that don't let your computer sit at the right angle

slick stainless steel spiral-bound cables)

Simply plug the stick into your computer's USB port and it will automatically receive any of your activity data when your compatible fitness device is within range

Wolf Tooth Aluminium Single Speed Cog - Shimano HG Splined - Black - Single Speed - 17T Back in Stock Compatible with Topeak TRI-BackUp seriesReplacement cogs for your single speed bike. Wolftooth single speed cogs are light, durable and available in a range of colours and sizes. Features: Weights: 22T= 23g . 20T= 20g . 19T= 18g . 18T= 16g . 17T= 15g . Compatible with Shimano style freehub splines. Designed to work with all chains, however, the cog is optimised for 10 and 11 speed chains. 7075 T6 aluminium. 4. 5mm width to prevent wear to your freehub body. Please note: Depending on your