Alright, let’s talk about the ACT Heavy Duty/Race Sprung 6 Pad Kit, specifically the HC4-HDG6. If you’re looking to give your Honda Civic (1989-1991) or CR-X (1989-1991) a serious upgrade, this is the kit you want. We’re talking about ACT’s most popular heavy-duty pressure plate here, and it’s got some serious engineering behind it.

The design is all about performance. ACT’s diaphragm setup boosts the clamp load while reducing deflection, which is key for extending the life of your clutch. Each diaphragm goes through a four-stage heat treatment process, so you know it’s built to handle the heat. Plus, the precision cover stampings add some much-needed rigidity and consistency, making sure everything works smoothly under pressure.

Now, let’s get into the 6-pad, spring-centered race disc. This bad boy is designed to handle the kind of stress that comes with high horsepower. It dampens torsional vibrations, which means you’re less likely to run into failure even when you’re pushing your ride to the limit. The engagement is definitely on the aggressive side, which means faster shifting—perfect for those quick downshifts on the track.

One thing to note is that while the pedal effort is light to moderate, you might experience some OE to mild gear rattle. This is all part of the package when you're looking for that race-ready feel. And with a torque capacity of 300 ft/lbs, you’ll have plenty of muscle to work with.

Here’s a quick rundown of what you get:

• Light to moderate pedal effort with aggressive engagement
• Moderate friction life, thanks to that unique diaphragm design
• High heat tolerance from select ceramic friction materials
• 100% clamp load tested and dynamically balanced for smooth operation at high RPMs

As for fitment, this kit is designed for the Honda Civic and CR-X models mentioned. Just keep in mind that it’s not a universal fit—so make sure your ride is compatible before diving in.

Install Instructions:

• Need help with the install? CLICK HERE for the instructions.

Specifications:

• Clutch Disc Diameter: 8.3 in (212 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 20
• Input Shaft Diameter: 0.875 in
• Product Weight: 11.1 lbs

So, if you’re ready to take your ride to the next level, the ACT HC4-HDG6 kit is a solid choice. It’s built for performance and reliability, and it’ll definitely give you that edge you’re looking for.