Surly Track Cog 3/32 X 18t Silver Capacity-One Bike Introducing the B-Dog pro model

Introducing the B-Dog pro model goggle

Quick-drying materials

Volume spacers with smaller increments and MCU bottom out bumper

a folding bead

Surly Track Cog 3/32 X 18t Silver Capacity-One Bike Introducing the B-Dog pro modelSurly Track Cog 3 32 X 18t Silver. Surly 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 TECH SPECS Tooth Count 18