Morris MM3 Magneto for Harley Davidson Sportster 1957 - 1970 and 45 and 80 Flatheads When building a chopper, custom, or bobber you want to keep everything tight and minimal as possible. High quality magneto ignitions allows you to run your bike without a battery, eliminating a ton of extra wiring and components. The Stainless Steel base of this magneto mounts solid to your cam cover. It features auto advance, and manual retard for starting. Since only the mag head and bearing-bronze ring on top move, no more leaks or shaking around with a stock 'advance' mount. Installs in 12 degree position increments (unlike stock 36 degree), for use with or without a battery. Comes standard with a black magneto cap, magneto kill terminal (stud) faces outward. All magnetos are made to order by Morris Magnetos in the USA. No returns are accepted on magnetos as they are made-to-order.