1976 & older
1977 & newer
For use in Big Twin style frames
To be used with 4-speed transmissions with a 65-69 main shaft
To be used with 4-speed transmissions with a 70-84 main shaft
To be used with softail style 5-speed transmissions
Attaches to stock Ironhead frame. Designed to acomodate a divorced Ironhead engine and a Big Twin 4 or 5-Speed transmission. Allows you to keep origional HD Sportster title.