Action Clutch Stage 4 Clutch Kit for 90-93 Integra

Action Clutch Stage 4 Clutch Kit - 1990-1993 Acura Integra

The Action Clutch Stage 4 (1MD) kit is the race-only step at the top of the range for your 1990-1993 Integra (DA). It pairs a heavy-duty single-diaphragm pressure plate and reinforced drive straps with an unsprung MIBA ceramic disc, available in 4-puck or 6-puck. Rated for 170% more holding capacity than the factory clutch, it's built for dedicated race cars that need maximum control and grip and don't have to compromise for daily-driver manners.

This One Is Not For The Street

Read this first, because it's the whole point of the Stage 4: this kit is intended for race applications, drag, road, and drift, and is not meant for street use. If your Integra sees any daily driving, the Stage 3 or a lower stage is the right call. The Stage 4 exists for a car that goes to the track and comes home on a trailer.

Pick The Right Year Range

Before you order: the 1990-1991 Integra uses a different clutch than the 1992-1993 model years, so select the year range that matches your chassis. The 1992-1993 kit fits both the B17 (GS-R) and B18 engines, so you're covered either way as long as you pick the correct range. If you're unsure which you have, confirm before ordering.

Unsprung MIBA Ceramic Disc

The difference from the Stage 3 is the unsprung disc. Dropping the sprung center hub removes the springs that normally absorb driveline shock, which is what gives the Stage 4 its fastest, most direct engagement and lets it handle the abuse of race launches. The trade is harshness: engagement is sharp and on-off, you'll get noticeable chatter, and the drivetrain feels every bit of it. That's exactly what a race car wants and exactly why it's miserable on the street. Like any ceramic disc, the chatter settles somewhat after a proper break-in, but an unsprung ceramic disc is aggressive by design.

4-Puck Or 6-Puck

You can run the disc as a 4-puck or a 6-puck. The 4-puck is marginally easier to modulate off the line, while the 6-puck adds surface area for more holding capacity and a firmer grab. Both are aggressive race pucks, so pick based on your power level and launch style rather than any expectation of street comfort.

Quality Checked Before It Ships

Every kit is inspected and signed off by one of Action Clutch's engineers, who carry over 60 years of collective experience, before it's released as a finished product. Even on a dedicated race clutch, you're getting a unit that's been checked for consistent, reliable performance rather than pulled straight off the line.

Fitment

Fits the 1990-1993 Acura Integra. Select your year range at checkout, 1990-1991 or 1992-1993, since the two use different clutches. The 1992-1993 kit covers both B17 and B18 engines. If you're unsure about compatibility with a swap or a non-stock transmission, contact us first.

Break-In

Even a race clutch needs a proper break-in. Easy driving for the first several hundred miles lets the friction surfaces seat and heat cycle evenly, which settles the engagement as much as an unsprung ceramic disc will and builds its holding capacity. Avoid riding the clutch and don't hammer it before it's broken in, since repeated slipping works against that.

Best For

• Dedicated race 1990-1993 Integra builds
• Drag, road racing, and drift use
• Drivers who need the fastest, most direct engagement and maximum holding capacity

Not Ideal For

• Any street or daily-driven car, choose the Stage 3 or lower
• Anyone wanting smooth, chatter-free engagement

If you're building a race-only Integra and want the most direct, highest-capacity clutch in the Action Clutch range, the Stage 4 is it: an unsprung MIBA ceramic disc in 4 or 6 puck, reinforced for abuse, rated to 170% over stock. Pick the right year range for your chassis, keep it out of a street car, and break it in before you launch on it.