Surly Track Cog 1/8'' X 19t Silver MFPN=8030819354430 Durability was crucial

Durability was crucial

Stroke (mm) 55 Lockout Switch Shock Mounted Switch Metric Yes Eyelet Diameter (mm) Trunnion

High-performance tire with unique characteristics of grip in all weather conditions be they dry or wet plus a high level of puncture protection

}WTB Trail Boss Tire - 29 x 2

Model Lock Holster Description U-Lock Belt Holster Color Black

Surly Track Cog 1/8'' X 19t Silver MFPN=8030819354430 Durability was crucialSurly 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 19 Size 1 8''