Derailleur roller kit (2x 11 teeth) mounted on ABEC7 high-end sealed ring bearings, compatible with:
-Shimano in 9/10/11 speeds for MTB / Road SRAM X0 / X9 / X7 in 9 speeds for ATV SRAM X0 / X9 / X7 in 10 speeds for ATV SRAM Apex / Rival / Force 10 in Road speeds using the bushing delivered for 4mm screws Campagnolo 11 in speed




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