SRAM Rear Derailleur Pulley Kit and Long Cage 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 Force 1 rear derailleurs. Features: Derailleur pulley set includes upper and lower pulleys with bearing plates Includes long arm pulley arm