The SRAM X01 Eagle Rear Derailleur features an updated cage architecture to provide better chain management.-Type 3 clutch is smoother and more durable-14T lower pulley-Includes a chain gap tool that makes it easy to set up the correct chain length-Backwards compatible, works with 10-50t and 10-52t cassettes-Updated cage provides better chain retention and more precise shifts-Comes in X01 Eagle master colorway as part of Eagle Colorsystem