Surly Track Cog 3/32'' X 16t Silver MFPN=11.1918.000.013 The only system to feature

The only system to feature continuous 3-axis adjustability for all out performance and comfort on the bike

preventing contamination

Rear Derailleur Mount Type 10x1 Standard Rear Der/Shifter Compatibility SRAM X-Actuation Cage Length Long Drivetrain Speeds 11 Weight 289 Color Black Chain Wrap Capacity (teeth) 46 Largest Cog 42

and high-intensity workouts in cold

Surly Track Cog 3/32'' X 16t Silver MFPN=11.1918.000.013 The only system to featureSurly 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 16 Size 3 32''