Just because your drivetrain has recently graduated to eleven-speeds, doesn't mean that your freehub body has. Chances are that your current HED wheels aren't compatible with an 11-speed Shimano/SRAM cassette, which is why HED created its 11-Speed Freehub Body Conversion Kit. Now, converting your 10-speed wheels to 11 is easy as a couple turns of the wrench
HED's 11-Speed Freehub Body Conversion Kit makes it possible to install an 11-speed cassette on HED wheels from 2010 to present. It's available in two versions — the 28mm axle is compatible with 2013 HED wheels, and the 26mm axle is compatible with 2010-2012 wheels.
In the kit, you'll find a new axle, an 11-speed freehub body, a dust cap, and a spacer for Shimano/SRAM 8/9/10 cassettes. It's important to note that most wheels will need to be re-dished by approximately 1mm. Also, the H3 and the Jet and Stinger disc wheels are not convertible.