Rivera Primo’s Pro Clutch is known for at least two things: holding horsepower and no strain on the forearm. One of the great things about the Pro Clutch is its scalability. It means that if you start off with the basic Pro Clutch and pump up the engine a bit, you can then change out the diaphragm spring to one of Rivera Primo’s higher performance springs.
If you then take that motor to new levels of horsepower, then you can simply buy the TPP Variable Pressure Clutch Assist and pop that on the Pro Clutch. The TPP Variable Pressure Clutch Assist is a mini lock up specifically manufactured for the Pro Clutch and has been tested to hold in excess of 250 hp. So, no matter what your level of power your street machine has, Rivera Primo’s Pro Clutch can handle it and all with an easy lever pull.
The Pro Clutch is made for severe-duty performance applications, and made of lightweight aircraft quality aluminum forgings, machined to an incredibly close tolerance and then hard anadized for long wear in adverse conditions. So if you have any Big Twin from 1937 to present, Rivera Primo makes either a belt drive or chain drive basket with a Pro Clutch for your machine.
