Centerforce Dual Friction Clutches Generate up to a 90% increase in holding capacity over stock systems. This clutch/disk set is designed for use with engines producing high horsepower and torque output, and radically altered high performance street vehicles. All Centerforce clutch systems provide smooth engagement and light pedal pressure without compromising high performance. CENTERFORCEŽ clutch systems are designed with the diverse needs of the customer, or end user in mind. Because of these diverse needs, CenterforceŽ offers a multilevel line to meet the requirements of a wide range of vehicles and their intended uses. To obtain the proper system, it is extremely important to completely qualify and verify the vehicle, not only by its make and model year, but also "define" its intended use. A stock vehicle used for commuting to and from the work place has an entirely different requirement than a "high performance" vehicle driven at the extreme of its capabilities, and sometimes beyond!