SRAM didn't hold back when it introduced the XX1 group. With a new, easy to swap chainring design, an interlocking chain, a cassette with an incredible gear range, and a derailleur that eliminates chain slap, it's no surprise that an improved driver body would accompany the rest of the group. So, if you scooped up XX1, and you want to roll on the SRAM Rise 60 wheels, the Rise 60 XX1 Driver Body is an essential piece of the group to get you rolling. Upon inspection, you'll immediately notice that the Rise 60 XX1 Driver Body is different than any other that you've ever seen. Instead of machined splines for the cassette to slide onto, a threading at the base secures the 11 speed XX1 Driver Body, which in turn secures the cassette onto the body. The single piece cassette slides onto the driver body without having to line anything up. For installation, the cassette requires the same locknut tool required on for any SRAM cassette. However, to make room for the ten tooth cog, the cassette's locknut has been eliminated while creating a more secure connection. The SRAM Rise 60 XX1 Driver Body is only compatible with the SRAM Rise 60 wheels. If you're currently riding DT Swiss 240 hubs, you'll need to purchase the DT XD Body.