SRAM RED cassette XG-1290 rainbow 12-speedSRAM RED cassette XG 1290 rainbow 12 speed eTap AXS Proven in the mountain bike sector for years, the 10 sprocket is now also being used on racing bikes. This is made possible by the new SRAM XDR freehub standard. The advantages are obvious: In connection with the proven one piece design, the cassette can be built even lighter with the same bandwidth. In addition, weight can be saved on the crank, since smaller chainrings are required for the same