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more concise take on the traditional crew height
Front Derailleur Cable Pull: Dual
Optimized for trail riding
Shimano STI Lever Hoods
Proprietary ZSG (Zero Slip Grip) natural compound
NEW Surly Track Cog 1/8'' X 18t Silver brand_surly more concise take on theSurly 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
