ACT HD/Race Sprung 4 Pad Kit Toyota Corona Mark II 1969-1970

~~$584.00~~ SALE: $473.00

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Model#TK1-HDG4
ManufacturerACT

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ACT TK1-HDG4 Heavy Duty/Race Sprung 4 Pad Kit

The ACT TK1-HDG4 kit is designed for those who demand performance and reliability from their clutch system. This kit features ACT's renowned Heavy Duty pressure plate, which utilizes an exclusive diaphragm design to enhance clamp load, minimize deflection, and extend the overall lifespan of your clutch. With a rigorous four-stage heat-treating process, each diaphragm is crafted for exceptional performance under pressure.

One of the standout features of the TK1-HDG4 is its precision cover stampings, which ensure rigidity and consistency. The kit also includes a 4-pad spring-centered race disc that effectively dampens torsional vibrations, resulting in quieter operation and improved durability, even in the most demanding environments. Customers have noted that while engagement can be harsher, the benefit is noticeably quicker shifting, making it a favorite for both street and race applications.

What Customers Are Saying

"I installed the TK1-HDG4 on my track car, and the difference is night and day. The engagement is aggressive, but it shifts like a dream. Highly recommend!" - Mike R.

"I've used several clutch kits, but this one really stands out. The pedal feel is just right, and it handles the power without any issues." - Sarah L.

Key Features

Light to moderate pedal effort with aggressive engagement, leading to some OE to mild gear rattle.
Moderate friction life enhanced by ACT's unique diaphragm design.
Engineered with select ceramic friction materials for high heat tolerance and maximum performance.
Ideal for high horsepower street or race use.
100% clamp load tested and dynamically balanced for reliable high RPM performance.

Specifications

Clutch Master Cylinder Included: No
Grease Included: Yes
Grade Type: Performance
Pilot Bushing Included: No
Pressure Plate Type: Heavy Duty
Release Bearing Included: Yes
Clutch Disc Diameter: 7.9 in (200 mm)
Disc Material: Ceramic
Input Spline Quantity: 21
Input Shaft Diameter: 0.9375 in
Alignment Tool Included: Yes
Disc Type: Sprung
Pressure Plate Bolts Included: No
Clutch Slave Cylinder Included: No
Flywheel Bolts Included: No
Pilot Bearing Included: Yes
Product Weight: 10.6 lbs
Torque Capacity: 265 ft/lbs
Torque Capacity Over OE: 0.86

Installation Instructions

For detailed installation instructions, CLICK HERE.

Other Part Numbers:
ACT #actTK1-HDG4

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Vehicle Make/Model	Year	Trims
Toyota Corona	1969-1970	Mark II

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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.