SRAM X0 Hub Conversion Caps (Rear) (10 x 135mm) (Rise/Rail/Roam Series) - 00.1918.145.004
SRAM X0 Hub Conversion Caps (Rear) (10 x 135mm) (Rise/Rail/Roam Series) - 00.1918.145.004, The SRAM X0 Hub Conversion Caps are for converting X0 Hubs, Roam30/40, RiseXX to 10x135mm Q/R (9/10sp cassette body).