Surly Track Cog 3/32'' X 18t Silver Weight-52.5g where a super-wide handlebar is

where a super-wide handlebar is required

MCU bumper for increased end stroke progression and bottom out control

35 Tire Diameter/ISO 20/406 e-Bike approved No Tire Width 2

Wider and thicker nose for pinching capabilities

Surly Track Cog 3/32'' X 18t Silver Weight-52.5g where a super-wide handlebar isSurly 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 18 Size 3 32''