ACT HD/Race Rigid 4 Pad Kit Mitsubishi Starion | Chrysler Conquest 1987-1989

~~$600.00~~ SALE: $486.00

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Model#MS1-HDR4
ManufacturerACT

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Upgrade Your Clutch with the ACT MS1-HDR4 Kit

If you're serious about performance in your 1987-1989 Chrysler Conquest or 1987-1989 Mitsubishi Starion, the ACT MS1-HDR4 Heavy Duty/Race Rigid 4 Pad Kit is a must-have upgrade. Designed for those who demand precision and durability, this clutch kit features ACT's renowned Heavy Duty pressure plate, which utilizes an exclusive diaphragm design. This design not only increases clamp load but also reduces deflection, ensuring maximum clutch life even under extreme conditions.

Performance Features

Light to moderate pedal effort with aggressive engagement for a more connected driving experience.
Constructed with high-quality ceramic friction materials for superior heat tolerance and performance.
Precision-engineered and dynamically balanced, ensuring smooth operation at high RPMs.
Designed for race use, providing you with the reliability you need on the track.

Technical Specifications

Clutch Disc Diameter: 9.4 in (240 mm)
Disc Material: Ceramic
Input Spline Quantity: 23
Input Shaft Diameter: 1 in
Torque Capacity: 420 ft/lbs (0.72 over OE)
Product Weight: 14.4 lbs
Pressure Plate Type: Heavy Duty
Release Bearing Included: Yes
Alignment Tool Included: Yes
Grease Included: Yes
Pilot Bearing Included: Yes

Installation and Compatibility

For those looking to install the MS1-HDR4 kit, detailed installation instructions can be found here. This kit is specifically tailored for the smaller disc sizes found in compact engines, making it an excellent choice for performance enthusiasts who want quicker shifts and a more aggressive engagement.

Real User Feedback

One Chrysler Conquest owner shared, "After installing the ACT MS1-HDR4, I noticed an immediate difference in how quickly I could shift. The engagement is definitely harsher, but it’s perfect for my track days. No more slipping, just pure performance!"

Another Mitsubishi Starion driver commented, "This clutch has transformed my car. The pedal feel is just right, and I can really push the limits without worrying about clutch fade."

Upgrade your ride with the ACT MS1-HDR4 Heavy Duty/Race Rigid 4 Pad Kit and experience the difference in performance and reliability. It's time to take your Chrysler Conquest or Mitsubishi Starion to the next level!

Other Part Numbers:
ACT #actMS1-HDR4

Proposition 65

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

Make Vehicle	Model	Year
1987-1989 Chrysler Conquest	Conquest	1987-1989
1987-1989 Mitsubishi Starion	Starion	1987-1989

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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.