Alright, gearheads, let’s talk about the ACT HD/Race Rigid 4 Pad Kit (AI4-HDR4). If you’re serious about performance and want a clutch that won’t back down, this is your ticket. It comes with ACT’s Heavy Duty pressure plate, which is a favorite among folks who push their rides to the limit. This isn’t just any pressure plate; it’s designed with a special diaphragm that amps up the clamp load while keeping deflection to a minimum. Trust me, that means your clutch is going to last longer and handle more power.

One of the cool things about this kit is the four-stage heat-treating process that all diaphragms go through. It’s like giving your clutch a little extra armor. Plus, the precision cover stampings ensure that you get the rigidity and consistency you need when you’re racing or just enjoying a spirited drive.

The 4-pad rigid race discs are where the magic really happens. Made from high-quality ceramic friction materials, these discs are tough and ready to take on the heat. The chrome-moly hub is heat-treated as well, so you know it’s built to last. The lightweight design means quicker shifts, which is a game-changer whether you’re on the track or just having fun on backroads. Sure, the engagement is a bit harsher, but that translates to faster shifts, and who doesn’t want that?

Now, if you’re considering this clutch, just a heads-up: it’s best suited for smaller disc sizes and engines. So, if you’re running something like an Acura Integra or a Honda Civic from the late '90s, you’re in good shape. It’s designed for race use, so keep that in mind if you’re thinking about daily driving with it.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort—perfect for those who want a bit of a workout but not too much.
• Aggressive engagement that might rattle gears a bit more than usual.
• Moderate friction life, but ACT’s diaphragm design helps extend it—just be aware that the rigid design could lead to increased spline wear.
• Engineered with precision and balanced for smooth operation at high RPMs.
• Definitely recommended for race use only—this isn’t your grandma’s clutch!

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Flywheel Included: No
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 8.7 in (220 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: Yes
• Product Weight: 11.9 lbs
• Torque Capacity: 310 ft/lbs
• Torque Capacity Over OE: 0.68

Fits:
Acura Integra 1994-2001
Honda Civic 1999-2000
Honda CR-V 1998-2001
Honda del Sol 1994-1997