NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 17t Silver hydraulic-fluid-type_mineral-oil Stylish construction of aluminum resistance

Stylish construction of aluminum resistance unit

Clearance for 700c x 47mm with or without fenders

Nylon blend fabric with laser perforated panels

Cassette Body Type: Threaded Metric 30 x 1mm

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 17t Silver hydraulic-fluid-type_mineral-oil Stylish construction of aluminum resistanceSurly 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