Custom application. Used to replace the OEM aluminum inner primary with an old style tin inner primary, that is compatible with a late style (70-84 alternator rotor style) Shovel engine. Kickstart only. Note: Will require a tin / steel outer primary cover (955817 smooth chrome, 555816 OEM style chrome; 555834 OEM style black) that works with the OEM 70-84 compensating sprocket. Note: Some spacing may be required between crankcase and cover