This Guide Refers To The Following Wheelsets

  • HUNT 4 Season All-road Disc (Previously HUNT 4 Season Gravel Disc) 
  • MASON X HUNT 4 Season Disc V1
  • MASON X HUNT 650B Adventure Sport Disc V1
  • HUNT 30 Carbon Gravel Disc V1


Need to order the parts featured in this guide? Head to our Spares page here. Our guide to using the Spares Finder is here.


Fitting Front QR, 12mm or 9mm Adaptors (1:22 in the video below)

  1. Remove the wheel from the bike and remove any disc rotors and disc rotor adaptors if fitted.
  2. Pull out the current adaptor cap with your hands, no tools are required.
  3. Insert the new cap into the hub end (longer one on the disc side, shorter on the non-disc side). This should be done with the widest part against the bearing.


Fitting Front 15mm Adaptors (2:25 in the Video Below)

  1. Remove the wheel from the bike and remove any disc rotors and disc rotor adaptors if fitted.
  2. Fit one side at a time.
  3. Pull out the QR adaptor cap with your hands, no tools are required.
  4. Clean the thread on the inside of the hub body with a rag.
  5. Insert the central axle-sized cap into the hub end (longer one on the disc side, shorter on the non-disc side). This should be done with the widest part against the bearing.
  6. Then slide over one of the threaded lock rings with the two small dimples. Please note that 12mm and QR axle adaptors are press-fit and do not require the lock ring.
  7. Using a small hex key (e.g. 2.5mm) inserted in one of the dimples spin the threaded lock ring into the thread on the hub until it bottoms out on the thread.
  8. Repeat on the other side.
  9. This is now ready to fit your fork and axle.

Please note: The 15mm axle cup will be held within 0.5mm of the bearing hole and inserting and tightening your bolt thru axle will apply the correct amount of preload tension to securely hold all parts in place.