Surly Track Cog 1/8'' X 17t Silver CheckoutTitle=Schwalbe G-One Allround Tire - 27.5 x 1.5 features Efficient Velo Tool’s legendary

features Efficient Velo Tool’s legendary Right Arm Clamp

When conditions get extreme the Shorty delivers maximum traction for maximum output

The first 31

This wheel isn't afraid of your ambitions so feel free to turn it all the way up

Surly Track Cog 1/8'' X 17t Silver CheckoutTitle=Schwalbe G-One Allround Tire - 27.5 x 1.5 features Efficient Velo Tool’s legendarySurly 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 1 8''