BBB Cycling 2x 12 14 T Derailleur Jockey Wheels Narrow/Wide I SRAM speed MTB System Compatible RollerBoys BDP 07

SRAM COMPATIBLE: The RollerBoys are SRAM jockey wheels 12 speed for use with MTB Systems SHIFT GEARS EFFICIENTLY: These derailleur pulley's makes shifting gears a breeze thanks to its 12 and 14-teeth pattern GREAT CHAIN RETENTION: The narrow-wide profile of the derailleur jockey wheels gives incredible chain retention DURABLE: These SRAM jockey wheels are stronger than regular Nylon mateterials thanks to a 40% glass-fiber mix STEALTHILY QUIET: Sealed CrMo bearings make for a silent operation compared to pulley wheels without ball bearings