Surly Track Cog 1/8'' X 17t Silver MFPN=080A920IKC001 Integrated spring clip is convenient

Integrated spring clip is convenient for securing lighter weight cargo

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

Patented Aither Technology

Surly Track Cog 1/8'' X 17t Silver MFPN=080A920IKC001 Integrated spring clip is convenientSurly 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''