No matter if you have a original style primary chain drive or aftermarket belt drive, as long as a stock or OEM style clutch basket is used there is a very light operating "Pro Clutch" to fit. The Primo Pro Clutch is developed and tested on the Drag Strip. It has a much larger friction area and can handle more horsepower than any other clutch available today. Installation is quick and easy. Kits contain all parts needed to convert your present system to the advanced Pro-Clutch system. Most parts are separately available.