NEW Surly Track Cog 1/8'' X 18t Silver Type_Shifters secure attachment points for a

secure attachment points for a pannier

Spindle Interface Type: Square Taper JIS

rectangular-shaped frame bags that leave room for both water bottle mounts on the frame

Weight: 426

Negative Spring: Air

NEW Surly Track Cog 1/8'' X 18t Silver Type_Shifters secure attachment points for aSurly 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