Surly Track Cog 3/32'' X 17t Silver MFPN=184-001-003 Support Cells extend the burn

Support Cells extend the burn time on your Exposure lights through Smart Port Technology

Shimano ST-RX400-R GRX 10 speed shift levers use a different cable pull than Shimano's 10 speed road shift levers

The Tellis Adjustable Dropper lever offers an intelligent design for unparalleled adjustments and overall function while still retaining one the softest actuations in the game

The Genuine Kashima Coating provides a buttery smooth and ultra-durable surface

Surly Track Cog 3/32'' X 17t Silver MFPN=184-001-003 Support Cells extend the burnSurly 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 17 Size 3 32''