Surly Track Cog 3/32'' X 17t Silver MFPN=BC-0001 Fast rolling thanks to the

Fast rolling thanks to the combination of the new Tubeless Ready design and Michelin GUM-X compound in comparison to the Michelin PRO4 Endurance

A rear rack mounted pannier-style basket that is perfect for shopping trips and can fold away when not in use

Rotor Size (mm) 140Pad Compatibility All Pad CompoundsRotor Type One PieceWeight 100Hub/Disc Compatibility 6-Bolt

Hardened ultra steel shackle with reinforced sleeve over crossbar and cylinder for added security Length 7 Lock Style Keyed Diameter 13 Cable Included No Shackle Width 3

Surly Track Cog 3/32'' X 17t Silver MFPN=BC-0001 Fast rolling thanks to 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 17 Size 3 32''