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  See more parts for Toyota 4Runner
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ACT HD-O/Race Rigid 4 Pad Kit Toyota 4Runner | Pickup 1989-1995 - T42-HDR4

If you're looking to take your off-road adventures to the next level, the ACT Heavy Duty O/Race Rigid 4 Pad Kit T42-HDR4 is worth a serious look. This isn't just any clutch kit; it's built for those of us who push our vehicles to the limit. The heart of this setup is ACT's Heavy Duty pressure plate, which works in tandem with a rigid 4 pad race disc. What does that mean for you? Well, it’s all about high torque capacity and aggressive engagement. When you hit the gas, you want that power to transfer seamlessly to the wheels, and this kit delivers.

One of the standout features is ACT’s exclusive diaphragm design. It ramps up the clamp load, minimizes deflection, and helps extend the life of the clutch. Trust me, after a few hard runs, you’ll appreciate the durability that comes from their four-stage heat-treating process. It’s designed to handle the heat and stress of off-road racing like a champ. Plus, the precision pressure plate cover stampings give it that extra rigidity, ensuring consistent performance even when things get rough out there.

The rigid center of the 4 pad race discs is practically indestructible. Made with premium ceramic friction materials, it holds its own even under the harshest conditions. You’ll notice quicker shifts and a lighter feel on the pedal, which is a game changer when you're navigating tricky terrain. Just be aware that this setup might increase gear rattle a bit, but that’s the trade-off for the kind of performance you’re getting.

Now, if you're the DIY type, you’ll appreciate that the kit comes with an alignment tool and grease, though it doesn't include a clutch master cylinder or pressure plate bolts. Just make sure you have those on hand if you need them. And for those of you who are serious about racing, this kit is definitely recommended for race use only.

Here are some quick specs that might help you decide:

  • Clutch Disc Diameter: 8.8 in (224 mm)
  • Torque Capacity: 355 ft/lbs
  • Input Spline Quantity: 21
  • Input Shaft Diameter: 1.125 in
  • Weight: 13.4 lbs

This kit is compatible with the Toyota 4Runner (1990-1996) and Toyota Pickup (1989-1995). So if you’re ready to upgrade and really want to feel the difference on the trails, this ACT kit is a solid investment that can handle the heat and keep you moving forward.

For installation instructions, CLICK HERE.

Other Part Numbers:
ACT #actT42-HDR4

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1990-1996
 Toyota 4Runner
1989-1995
 Toyota Pickup

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ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.

ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.

Why ACT? Because Power Without Control Is Useless.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.

Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.

What ACT Offers:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.

Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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