With some research and communication with the Fulcrum importer in the UK, I have found out that Fulcrum lockrings used for the "AFS" system are part number RF1137272 (4-M1-101B) and can be ordered via your LBS. Bloody proprietary components. Even more annoying that they're not listed in the Fulcrum manuals anywhere
In case anyone comes across the same issue as me:
With some research and communication with the Fulcrum importer in the UK, I have found out that Fulcrum lockrings used for the "AFS" system are part number RF1137272 (4-M1-101B) and can be ordered via your LBS. Bloody proprietary components. Even more annoying that they're not listed in the Fulcrum manuals anywhere
https://www.i-ride.co.uk/products/components/wheels/wheel-spares-and-accessories/lockring-for-afs-disc---4pcs/?sku=RF1137272