Onyx MFU Driver

95,0 126,5 

SKU: onyx-mfu-driver Category:


Replacement freewheel/driver for newer Onyx Racing Produtcs hubs employing the MFU structure (moduar freehub units).

  • Compatible with all Vesper hubs, and newer Classic hubs.
  • 5 models: Shimano HG, Shimano HG (stainless steel), Shimano Micro Spline, Sram XDR, Sram XDR (stainless steel).
  • Note! Shimano Micro Spline drivers use different widget/end cap compared to the rest of the drivers! If one is moving over from one driver standard to the other (e.g from XDR to MS or vice-versa), widget/end cap needs to be replaced as well. All widget/end caps are for Boost (148×12 mm axles). Inquire about other models if needed.
  • Sram XD drivers are not included in the Onyx RP lineup. XD cassettes can be run with an XDR driver by installing a 1.85mm spacer under the cassette.
  • Stainless steel versions are more durable and recommended for especially heavy applications such as e-bike or single-speed use. Vesper hubs use aluminium drivers in all applications.
  • Ensure compatibility by email, if needed.

Read more about the differences between XD and XDR drivers in the article below.

XD, XDR and HG Freehub Drivers

Learn more about driver material choices here.

Onyx Freehub Driver Material – The Choice Between Steel and Aluminum 

Additional information


Shimano HG, Shimano HG (chromoly), Shimano Micro Spline, Sram XDR, Sram XDR (chromoly)

Widget/end cap

No, Yes