NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 18t Silver Type_Headsets - Tread wraps around to

- Tread wraps around to the side of the tire a bit which allows for continued traction while turning

- Motion Control damping featuring low speed compression adjustment

the Bridge Club hits the sweet spot that separates on- and off-road excursions

- Shot-peened finish

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 18t Silver Type_Headsets - Tread wraps around toSurly track cogs are threaded the same as a BMX freewheel (1. 375 x 24 tpi right hand threads). This means that they will fit on single speed rear hubs, as well as BMX freewheel hubs, but this application is not recommended. Track cogs are meant to work on track hubs only. 415 hardened chromoly steel 1. 375" x 24 tpi Photo for color and material reference only Tooth Count: 18