Alright, let’s talk about the ACT AI2-SPR4 Sport/Race Rigid 4 Pad Kit. If you're looking to step up your clutch game, this kit is a solid choice. It comes with a sport pressure plate that really amps up your ride. What’s cool about ACT’s pressure plates is their unique diaphragm design. It cranks up the clamp load, which means less deflection and a longer clutch life—who doesn’t want that?

Now, I gotta mention the heat-treating process. Each diaphragm goes through a four-stage treatment, so you know it’s built to perform under pressure. The precision cover stamping adds a layer of rigidity and consistency that you can feel when you’re shifting. And let’s dive into the 4-pad rigid race discs—they’re crafted from high-quality ceramic friction materials. This means you’re getting a strong, durable setup that can take the heat.

The lightweight, rigid design isn’t just for show; it allows for quicker shifts and a smoother driving experience. Just keep in mind, the engagement can be a bit harsher, but that’s what you get with a race-oriented setup. If you’re running a smaller engine, this disc is perfect for those tighter dimensions. For example, it works well with the 8.7-inch clutch disc diameter, which is about 220 mm, and fits into that 24-spline input shaft like a glove.

Installation Notes:

• Need to get your hands on the install instructions? CLICK HERE to check them out.

Here’s what you can expect:

• Pedal effort is light to moderate, but you’ll feel that aggressive engagement and maybe even a bit of gear rattle.
• The friction life is moderate, but thanks to ACT’s diaphragm design, it’s extended a bit—just be aware that the rigid design might wear out the splines faster.
• Everything’s engineered and balanced with care, using select ceramic materials that handle high heat like a champ.
• This kit is really meant for race use, so keep that in mind if you’re planning on hitting the track.
• Every unit is 100% clamp load tested and dynamically balanced for smooth operation at high RPMs.

Specs that matter:

• Clutch Master Cylinder: Not included
• Grease: Yep, it’s included
• Grade Type: Performance
• Flywheel: Not included
• Pilot Bushing: Not included
• Pressure Plate Type: Sport
• Release Bearing: Included
• Clutch Disc Diameter: 8.7 in (220 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 24
• Input Shaft Diameter: 1 in
• Alignment Tool: Included
• Disc Type: Solid
• Pressure Plate Bolts: Not included
• Clutch Slave Cylinder: Not included
• Flywheel Bolts: Not included
• Pilot Bearing: Included
• Weight: 11.8 lbs
• Torque Capacity: 280 ft/lbs (that’s a 0.52 increase over OE)

This kit is specifically designed for the 1990-1991 Acura Integra, so if that’s your ride, you’re in luck. It’s a great way to enhance your driving experience and really feel the difference on the road or track.