The new SRAM XX SL Eagle AXS Transmission Rear Derailleur changes how we think about the connection between our cassette and derailleur. This T-Type derailleur mounts directly to our bike's rear axle and contacts the cassette directly for seemless and precise shifting performance on race day. Built specifically for high-stakes XC racing, this derailleur features a carbon cage and a Magic Wheel that keeps the pulley wheel spinning even when a stick gets lodged inside.