Industry Nine's wheels are much like SRAM's XX1 components -- they're both modern takes on traditional designs. Because XX1 thinks outside the box, it requires a specific freehub body. Industry Nine offers its XD Driver to convert any I-9 wheel to be compatible with XX1 cassettes.

The XD Driver is machined from aluminum and weighs about ten grams less than a standard freehub body. It has fresh bearings installed, along with the pawls and springs -- so it's a straightforward swap. It does require some mechanical knowledge, and I-9's site features instructions. If you feel intimidated by them, we recommend having a qualified mechanic perform the XD1 Driver Body swap.

There are two versions of the Industry Nine XD Driver one for wheels from '06 till '12 and one for '13 and newer.