SRAM XX T-Type Pedal Assist Build Kit Brose 165mm KitThe XX Eagle AXS E Bike Transmission groupset has the strength to handle big enduro days with the weight to make it manageable. Eagle Transmissions take a holistic approach to a bicycle shifting, an entire system synchronized, providing you with a superior ride experience. Shifting under load is made possible on the XX cassette due to a combination of X SYNC technology and cassette mapping, creating seamless shifts even during your hardest power