Surly Track Cog 1/8'' X 17t Silver MFPN=080A920IKC001 M 502 RimTubeless-Ready Alloy rim

M 502 RimTubeless-Ready Alloy rim (tape valves and sealant sold separately)

Patented Aither Technology

75 ISO 507 Bead Fold Tread/Sidewall Color Bk/Blk PSI 100 Weight (Grams) 429 TPI 120 Durometer Features DTC Reflective Sidewall No

} SRS technology for a more precise shifting

providing a better alternative to stock axles

Surly Track Cog 1/8'' X 17t Silver MFPN=080A920IKC001 M 502 RimTubeless-Ready Alloy rimSurly 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 1 8''