SRAM XX1 Eagle Rear Derailleur 12 speed X-Sync Pulleys and Inner Cage Grey Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... SRAM XX1 Eagle Rear Derailleur 12 speed X-Sync Pulleys and Inner Cage Grey Ships within Australia In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...