All-City 13T x 1/8" Track Cog Black MPFN-HXS-3 SRAM GX rear derailleur takes

SRAM GX rear derailleur takes the place of X

Steerer Type Straight Wheel Mount Center Offset (mm) 0 S

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

Diameter 20in Brand Sun Ringle Model CR-18 ISO 406 ID Width 17

Aluminum cups require TruVativ or compatible installation tool

All-City 13T x 1/8" Track Cog Black MPFN-HXS-3 SRAM GX rear derailleur takesAll 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