This handy dandy freehub body will allow you to run SRAM's XX1 10-42T 11speed cassette with any existing DT Swiss Ratchet System rear hub. It is completely swappable with your existing DT Swiss freehub body. No extra parts or pieces are need and you do not have to mess around with the wheel dish either. Simply swap the freehub body, install cassette, put the wheel on the frame, go ride. You need to choose from standard 135mm quick release, 135x10mm or 142x12mm through axle.
Note: Ratchet System hubs include the 240S, 180, 350 and more