These throttle assemblies are designed to update 1981 and earlier Harley-Davidson chassis with 1" diameter handlebars for S&S. Super E and G carbs or any other butterfly type carburetors with 1981-Up stock style throttle linkage. Cables are not interchangeable since they are specifically designed for the opening or closing side of throttle. Cable measurement is from throttle grip to end of cable housing, barrel fittings are molded in place. Kit contains throttle grips and both throttle cables.