Pressure plates

Pressure plates, from sport to max extreme type

There are 4 types of pressure plates depending on your needs.

Sport (SP)

- 10-30% Increase in clamp load - Stock to moderate pedal effort

Heavy Duty (HD)

- 20-50% increase in clamp load - Stock to moderate pedal effort - Most meet SFI Spec 1.1

Xtreme (XT)

- 50-120% incease in clamp load - Moderate to heavy pedal effort - All meet SFI Spec 1.1

MaXX Xtreme (XX)

- 70-150% increase in clamp load - Heavy to very heavy pedal effort - All meet SFI Spec 1.1

ACT pressure plates are not rebuilt from used parts or upgraded Original Equipment (OE). ACT manufactures new units based on ACT design, our models are computer-controlled testing press, as one part of the production quality assurance program.

ACT plates features a four-stage heat diaphragm spring. This will increase the clamp load from 10 to 150 percent. Many of the cover stampings benefit from a reinforcement, this reduce flex and improve efficiency and pedal feel. For the high torque and high RPM applications, ACT use stronger drive straps and higher grade rivets to increase the strength.  Every plate is load tested on a specially configured, computer-controlled testing press. The 4 main types are available to be combined with street discs or race discs.

If you aim for quality, reliability and stability, we are sure you will enjoy the ACT products.

Pressure Plate Key Features

• ACT pressure plates are available in a variety of designs, including all factory push, pull, crimp and rivet designs.
• ACT plates feature a special, single-diaphragm design to dramatically increase clamp load without the adverse effects of double-diaphragm type clutches.
• Effective diaphragm designs are used to increase clam load, reduce deflection and maximize clutch life. All diaphragms endure an exclusive four-stage, heat treating process for unparalleled performance.
• All castings are CNC-machined for greater consistency and precision.
• Cover stampings are sometimes reinforced by ACT to reduce flex and improve the efficiency and feel of the pressure plate.
• Stronger drive straps and rivets are used when needed to strengthen the pressure plate and prevent breakage.
• All ACT models are dynamically computer balanced for smooth operation at high RPM.
• A load test for every plate is performed on a special computerized testing press for quality assurance. This same machine also assists in designing new products and evaluating parts that are in for service.
• Proper release travel, clamp load, pedal effort and working range are analyzed using specialized testing equipment and software.
• Most ACT pressure plates are certified as meeting SFI Specification 1.1 and are legal for competition in all racing organizations where DFI certifications is required. 

More information

If you have more questions or need assistance, please don't hesitate to contact us. Our specialists are ready for your questions.