Elevating the shift expanding the capable the X01 Eagle™ derailleur features an updated cage architecture to provide better chain management than ever. The X01 Eagle™ rear derailleur works with the new 10-52t cassettes and is backwards compatible to also work with 10-50t options. As part of the new Eagle™ Colorsystem it comes in X01 Eagle™ master colorway to go perfectly with any color cassette and chain a rider wants. FEATURES Updated cage provides better chain retention and more precise shifts. Comes in X01 Eagle™ master colorway as part of Eagle™ Colorsystem – to go with all cassette and chain color options - Black Gold Rainbow to HardChrome and all-new Copper. Backwards compatible works with 10-50t and new 10-52t cassettes. SPECIFICATIONSSpeed RD: 12sCable pull ratio: X-actuationCage RD: n/aMax tooth: 52Color RD: Red LunarPulley bearings material: n/aCage material RD: n/a