SRAM X01 EAGLE (R) DER TYPE 3.1 12SPEED BLK       Completely redesigned rear derailleur incorporating our proven X-HORIZON™ design and new Type-3 ROLLER BEARING CLUTCH™ technology     Re-engineered mounting system and repositioned CAGE LOCK™ add robustness     Eagle™ pulley technology provides greater efficiency, crisper shifting and quieter     Aluminum cage and lightweight hardware make it light and tough Categories: Parts, Mountain bike Parts, Rear Deraileur, Sram Tags: rear deraileur, rear derailleur, sram, xx1 eagle