All-City 13T x 1/8" Track Cog Black MPFN-HXS-3 Rear disc brake adaptor specifically

Rear disc brake adaptor specifically designed ONLY for the Surly Troll Ogre ECR and Pugsley

}Zipp Freehub Kit - 10 to 11-speed 188 SRAM

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Over Locknut (mm) 142 Axle Diameter (mm) 12 Overall Length (mm) 171 Thread Length (mm) 13 Thread Pitch 1

All-City 13T x 1/8" Track Cog Black MPFN-HXS-3 Rear disc brake adaptor specificallyAll City 13T x 1 8" Track Cog Black. All city's great value standard track cog available in the most popular sizes. 16t and lower are solid 17t and higher have cutouts Chromoly steel; CNC precision machined 1 8" width cogs; Threads are 1. 37" x 24 tpi TECH SPECS Tooth Count 13