This is our best selling single cylinder magneto, especially good for Velocettes but also fits many Single Cylinder Bikes. See the BTH Website for more information. For more information visit  www.bt-h.biz. Brief Specification : Flange mounted, three bolt fixing. A direct replacement for whatever system you are using now. Self generating unit requires no battery. Uses the latest advances in electronic ignition technology. Simplicity itself to time and no contact breaker points to maintain. Shaft and fixings manufactured in stainless steel. Body CNC machined from high strength, heat treated, LM25 casting. Sealed bearings for a long maintenance-free life. Rotation: Clockwise or counter clockwise. Cut out wire for stop button ignition switch. Available with either fixed or electronically advanced timing. Twin plug option available. The FM1C Vincent Comet version has slightly shorter end cap to enable it to fit underneath the Vincent's original aluminium cowl.