●Eagle technology revolutionized the mountain bike experience by offering riders a 1x drive solution specially designed to be lightweight, strong and intuitive ●With its gear ratio, it is equipped for all terrain ●The NX Eagle drive is the latest addition to the Eagle family and shares technologies with the drives XX1, X01 and GX, making it 100% compatible within the Eagle family ●The PG-1230 is the only Eagle cartridge robust enough to withstand the increased demands of E-MTB applications, and a perfect solution for tough use. ●Compatible with 8, 9, and 10 speed Sram/Shimano freewheel bodies