Surly Track Cog 3/32'' X 17t Silver MFPN=00.7018.209.002 Competition Black SpokesDouble Butted: 2

Competition Black SpokesDouble Butted: 2

For use with 1/8" single speed BMX/Track or 8/9-Speed chains

This light is an integral part of daily commutes or road rides and for staying safe day or night

(mm) 17 Manufacturer Number 3803 Material Steel Thickness 10

Surly Track Cog 3/32'' X 17t Silver MFPN=00.7018.209.002 Competition Black SpokesDouble Butted: 2Surly Track Cog 3 32'' X 17t Silver. 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 Photo for color and material reference only TECH SPECS Tooth Count 17