Assembly Description: This SRAM Derailleur Pulley Sets includes both upper and lower pulleys as well as a long pulley arm compatible with SRAM GX 1 x 11, SRAM Rival 1 and SRAM ...

Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design. Features: Features a 15-tooth upper and 19-tooth lower, aluminum pulley ...

11s Shimano derailleurs and shifters with SRAM 10-42t XD cassettes. Granted the combination can work without modification- but performance wasn't quite what we'd expect from Shimano and SRAM's finest. When used with ...