NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 17t Silver groupset-speeds-11 The Surly Rear Disc Rack

The Surly Rear Disc Rack is made of tubular CroMoly steel and is specifically designed to fit frames with seatstay-mounted disc brakes like the Straggler (650b and 700c)

HG Shimano

Battery: Li0Ion

- Nickel plated finish for corrosion resistance

NEW Surly Cogs Track Cog Surly Track Cog 1/8'' X 17t Silver groupset-speeds-11 The Surly Rear Disc RackSurly 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