ACT HD/Race Rigid 4 Pad Kit Saturn 1991-1999

$652.00

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Model#ST1-HDR4
ManufacturerACT

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Upgrade Your Saturn with the ACT ST1-HDR4 Clutch Kit

If you’re a proud owner of a 1991-1999 Saturn model, the ACT ST1-HDR4 Heavy Duty/Race Rigid 4 Pad Clutch Kit is engineered to elevate your driving experience. Designed specifically for models such as the Saturn SC, SC1, SC2, SL, SL1, SL2, SW1, and SW2, this clutch kit not only enhances performance but also provides the durability you need for spirited driving or track days.

Performance Features

Utilizes ACT's most popular Heavy Duty pressure plate, maximizing clamp load and minimizing deflection.
Exclusive four-stage heat treatment process on diaphragms ensures exceptional performance and longevity.
Precision cover stampings enhance rigidity and consistency for reliable operation.
Equipped with a 4-pad rigid race disc made of high-quality ceramic friction materials, designed for quick shifts and smooth engagement.
Lightweight design allows for faster shifting, though expect a harsher engagement for that race-ready feel.

Installation and Specifications

Installing the ACT ST1-HDR4 kit is straightforward, especially for those who enjoy working on their own vehicles. For detailed installation instructions, CLICK HERE.

Clutch Disc Diameter: 8.4 in (214 mm)
Torque Capacity: 320 ft/lbs
Input Spline Quantity: 22
Input Shaft Diameter: 1 in
Pressure Plate Type: Heavy Duty
Product Weight: 9.7 lbs
Grease Included: Yes
Release Bearing Included: Yes
Alignment Tool Included: Yes

Fitment

This clutch kit is compatible with the following Saturn models:

Saturn SC (1991-1992)
Saturn SC1 (1993-1999)
Saturn SC2 (1993-1999)
Saturn SL (1991-1999)
Saturn SL1 (1991-1999)
Saturn SL2 (1991-1999)
Saturn SW1 (1993-1999)
Saturn SW2 (1993-1999)

Customer Feedback

“I installed the ACT ST1-HDR4 on my 1997 Saturn SC2. The pedal feel is just right — light enough for daily driving but aggressive enough for the track. Shifts are noticeably quicker, and I love the immediate engagement. Highly recommend for anyone looking to boost their Saturn's performance!”

Whether you're hitting the track or just want to enhance your daily driver, the ACT ST1-HDR4 Clutch Kit is a solid choice for Saturn enthusiasts. Experience the difference with a clutch designed for performance and reliability.

Other Part Numbers:
ACT #actST1-HDR4

Proposition 65

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

Make Vehicle	Model	Year
1991-1992 Saturn SC	SC	1991-1992
1993-1999 Saturn SC1	SC1	1993-1999
1993-1999 Saturn SC2	SC2	1993-1999
1991-1999 Saturn SL	SL	1991-1999
1991-1999 Saturn SL1	SL1	1991-1999
1991-1999 Saturn SL2	SL2	1991-1999
1993-1999 Saturn SW1	SW1	1993-1999
1993-1999 Saturn SW2	SW2	1993-1999

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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.