Surly Track Cog 3/32'' X 17t Silver Fixed Gear

Surly 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
• Cassette Body Type: Threaded Track
  
• Chain Compatibility: 3/32" , 9-Speed
  
• Teeth (teeth): 17 teeth