NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 15t Silver fork-type_suspension Outboard clamp is replaced by

Outboard clamp is replaced by extra rubber for cushioning

SRAM's most affordable ten speed chain offers most of the strength and all of the shifting performance of other models

Saris Trainer Thru-Axles allow tru-axle equipped bikes to be used on Saris trainers

Brakes: TRP Spyre-C

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 15t Silver fork-type_suspension Outboard clamp is replaced bySurly 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: 15