NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 20t Silver variant-size-68x127 Operates with Shimano Di2 for

Operates with Shimano Di2 for digital electronic shifting

Gutter Seal Technology™ drastically improves sealing against the elements

The GX Eagle AXS controller offers a unique wireless shifting experience with ergonomic touchpoints that are customizable to your preferences - you can choose what each button does through the AXS App

sealed bearings

These direct mount chainrings will replace your existing chainring and spider or replace the direct mount chainring for SRAM AXS cranksets

NEW Surly Cogs Track Cog Surly Track Cog 3/32'' X 20t Silver variant-size-68x127 Operates with Shimano Di2 forSurly 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