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

Nordic - Construction - heel: Carbon thermo dure

}SRAM X01 11 Speed Rear Derailleur Inner Cage/Pulley Kit

Use as a reference

The Prestaflator is designed with a long-throw trigger valve

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''