Made to meet the needs of the best riders, with the lowest possible weight, XX is the evolution of the previous group XX1 Eagle Axs. The new rear gearbox is more resistant thanks to the new interface without fork and has known technologies such as the overload Clutch and the Axs system. - simpler adjustment than ever: just set the model and the bike brand on the SRAM Axs app, the size and the teeth of the front crown; The app itself will indicate the ideal length of the chain and the position to be set on the clutch Made to Meet the Needs of the Best Riders, with the Lowest Possible Weight, XX is the Evolution of the Previous XX1 Eagle Axs Groupset. The New Rear Derailleur is More Resistant Thanks To The New Dropoutless Interface and Features Well-Known Technologies Such AS Overload Clu.