Surly Track Cog 1/8'' X 21t 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: 1/2" x 1/8"
    • Teeth (teeth): 21 teeth

    Velo Mine customer service phone 217.679.2356 - Text: 217.827.1173 - Email: ben@velomine.com