Surly Track Cog 1/8'' X 15t Silver MFPN=Y1MP98020 5 Spring Adjustments Preload Body

5 Spring Adjustments Preload Body Eyelet Standard Damping RC2T Adj

9 Thickness In mm 13mm

} The Granit Super Extreme 2500 is a U-lock of true superlatives

Bottom-out system prioritizes a more open compression and air spring feel enhancing control and eliminating unwanted noise

Replacement freehub bodies for Sun Ringle wheels that accommodate a variety of cassette types

Surly Track Cog 1/8'' X 15t Silver MFPN=Y1MP98020 5 Spring Adjustments Preload BodySurly 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 Size 1 8''