Alright, let’s talk about the ACT HD/Race Rigid 4 Pad Kit, specifically the HC5-HDR4. If you’re looking to step up your clutch game, this kit is worth a look. ACT’s Heavy Duty pressure plate is the star here, featuring a unique diaphragm design that really cranks up the clamp load. What does that mean for you? Less deflection and a longer-lasting clutch, which is always a win in my book. They really put this thing through the wringer with a four-stage heat-treating process, so you know it’s built for performance.

The pressure plate itself has some solid cover stampings that add to its rigidity and consistency. Now, let’s get into the 4-pad rigid race discs. These bad boys are made from high-quality ceramic friction materials, which means they can handle the heat without breaking a sweat. The chrome-moly hub is heat-treated too, so it’s strong and durable. You’ll notice that the lightweight design allows for quicker shifts, which is great for those who like to push their cars a bit harder. Just a heads up, the engagement can be a bit harsher, but that’s part of the deal when you want faster shifts.

Now, if you’ve got a smaller engine, this setup is particularly well-suited for you. It’s got an 8.3-inch clutch disc diameter (that’s 212 mm for those who prefer metric) and a torque capacity of 300 ft/lbs. Just keep in mind that while it’s designed for performance, it’s really recommended for race use only. You’ll feel the difference with light to moderate pedal effort and a bit of gear rattle, which is all part of the charm when you're chasing those high RPMs.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort, with that aggressive engagement you want.
• Moderate friction life, but don’t be surprised if the rigid design increases spline wear a bit.
• Carefully engineered and precisely assembled, using select ceramic materials for max heat tolerance.
• Best for race applications only—this isn’t your daily driver clutch.
• 100% clamp load tested and dynamically balanced for smooth operation at high RPMs.

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 8.3 in
• Clutch Disc Diameter: 212 mm
• Disc Material: Ceramic
• Input Spline Quantity: 20
• Input Shaft Diameter: 0.875 in
• Alignment Tool Included: Yes
• Disc Type Sprung Solid: Solid
• Pressure Plate Bolts Included: No
• Clutch Slave Cylinder Included: No
• Flywheel Bolts Included: No
• Pilot Bearing Included: Yes
• Product Weight (lbs.): 9.7
• Torque Capacity (ft/lbs.): 300
• Torque Capacity Over OE: 0.84

Products Fitment:

• Acura EL 1997-2005
• Honda Civic 1992-2005
• Honda del Sol 1993-1997