The Joe Hunt completely self-contained magneto replaces that worn troublesome stock Lucas ignition on your Vincent. Stock electrical system can be retained, or discarded for racing use. Just remove the stock ignition and install stock advance assembly onto the end of the new magneto's tapered shaft, install unit in case and set ignition timing. 

Note: Use stock timing instructions. All magnetos are custom built to order and may take 2-3 weeks for delivery.