Surly Track Cog 3/32'' X 17t Silver keyword search-FOX Model Year 26 Formerly the Z410 model

Formerly the Z410 model

Nominal Chain Line 55cm

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Surly Track Cog 3/32'' X 17t Silver keyword search-FOX Model Year 26 Formerly the Z410 modelSurly 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 17 Size 3 32''