Surly Track Cog 3/32'' X 17t Silver MFPN=BC-0001 in a secure out-of-the-way location

in a secure out-of-the-way location with the EnCase® System

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

RS PROLINK is a favorite among endurance trainers

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

The lower spring rate in turn gives a lighter lever action reducing rider fatigue and keeping Hope's legendary feel and modulation

Surly Track Cog 3/32'' X 17t Silver MFPN=BC-0001 in a secure out-of-the-way locationSurly 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''