Surly Track Cog 1/8'' X 16t Silver MFPN=180-002-003 Fit 7mm standard rails and

Fit 7mm standard rails and 7x9mm oval rails

BMC’s Tuned Compliance Concept (TCC) provides the highest level of compliance through a dedicated carbon layup that is as stiff as it is comfortable

} Metal tire levers are used on wheels where mounting and dismounting the tires with plastic tire levers is difficult or impossible

Mminimalist

Surly Track Cog 1/8'' X 16t Silver MFPN=180-002-003 Fit 7mm standard rails andSurly 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 1 8''