NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 20t Silver fpbf Cassette: SRAM PG-1251 10-44t

Cassette: SRAM PG-1251 10-44t

53cm : 5'8" - 5'10"

Cassette Cogs: 11-12-13-14-15-16-17-19-21-24-27-30

Top Tube Length (Effective) 520 530 545 560 580 605 M

Cassette Cogs: 11-13-15-17-20-23-26-30-34

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 20t Silver fpbf Cassette: SRAM PG-1251 10-44tSurly 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: 20