Elite XD / XDR Direct Drive Freehub For Trainer 11 / 12-Speed

Elite SRAM XD & XDR Cassette Adaptor

Elite SRAM XD/XDR Freehub for Elite Direct Drive Trainers

SRAM 11-12 Speed XDR Driver Freehub Body for 900 Rear Hub

Pasak Mtb Freehub Body For HG MS XD XDR System Micro Spline Core 11/12 Speed

Elite Direct Drive Trainer SRAM XD/XDR Cassette Adaptor in Black

Zipp ZR1 XDR 11/12/13 Speed Free hub