The new XX Eagle AXS Transmission DUB kit is designed to to satisfy all our gear shifting needs providing the perfect balance of weight savings and increased durability for tough enduro conditions. The fear of shifting under load is a thing of the past thanks to the full X-SYNC cassette and direct synchronization between derailleur and cassette , so the system literally shifts better the harder we pedal. The AXS Pod Ultimate controller performs plug-in duties along with inputs for any other components controlled by AXS which we use. Flat top chain design maximizes shifting efficiency and extends chain life and XX DUB cranks provide consistent power delivery which we loved in the XX line of cranks.