Surly Track Cog 3/32'' X 16t Silver MFPN=HXCOCXKXX Nordic - Construction - heel:

Nordic - Construction - heel: Carbon thermo dure

Color Black/Gray Rise 25 Material Carbon Upsweep 5 Defined Color Black Back Sweep (deg) 8 Bar Clamp Diameter (mm) 35

Model XD-15 Spindle Interface 30mm Shell BSA Shell ID 33

5mm Handlebar Diameter 22

28H front / 28H rear

Surly Track Cog 3/32'' X 16t Silver MFPN=HXCOCXKXX Nordic - Construction - heel: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 Tooth Count 16 Size 3 32''