If you're looking to take your clutch game to the next level, the ACT HD/Race Rigid 4 Pad Kit (AR1-HDR4) is where you want to be. This isn’t just any clutch kit; it’s packed with features that serious drivers will appreciate. The heavy-duty pressure plate is the standout here, designed with a unique diaphragm that cranks up the clamp load while keeping deflection in check. What does that mean for you? Longer clutch life and better performance when you really put the pedal down.

Now, let’s talk about the nitty-gritty. Each diaphragm goes through a four-stage heat-treating process, so you know it can handle the heat when you're pushing your engine hard. The precision cover stampings ensure that the pressure plate is rigid and consistent, which is crucial for those high RPM runs. And those 4-pad rigid race discs? They’re made from top-notch ceramic friction materials, which means they can take the heat without breaking a sweat.

What you get with this setup is a lightweight, rigid design that allows for quicker shifts. Sure, the engagement is a bit harsher, but that’s just part of the race vibe—faster shifts mean you’re not wasting any time when you need to change gears. This kit is particularly suited for smaller disc sizes, making it perfect for those smaller engines that need a bit more bite.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort, with aggressive engagement and some increased gear rattle—just how we like it.
• Moderate friction life, which is extended thanks to ACT's exclusive diaphragm design, though the rigid setup might wear the spline a bit faster.
• Engineered for precision, this kit is balanced perfectly and uses select ceramic materials that can handle high heat for maximum performance.
• Best suited for race use only—this isn’t your daily driver clutch.
• Every kit is 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Flywheel Included: No
• Pilot Bushing Included: Yes
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 8.4 in (214 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 24
• Input Shaft Diameter: 1.03125 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: No
• Product Weight: 9.9 lbs
• Torque Capacity: 330 ft/lbs (0.73 over OE)

Products Fitment:

• Acura RSX 2002-2006
• Acura TSX 2004-2008
• Honda Civic 2002-2011