SKU: 46847259123

Z64-HDG4 - HD/Race Sprung 4 Pad

Sale price$229.05 Regular price$254.50
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Ships within 48 hours · Estimated delivery Sep 23 - Sep 28

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Description

Z64-HDG4 - HD/Race Sprung 4 PadIntroducing the Z64 HDG4 Heavy Duty Race Sprung 4 Pad Clutch Kit by ACT, meticulously engineered to meet the demands of high performance driving. Designed to deliver exceptional performance and reliability, this kit combines ACT's Heavy Duty pressure plate with a 4 pad, spring centered race disc for optimal performance on the street or track. ACT's Heavy Duty pressure plate utilizes an exclusive diaphragm design to increase clamp load, reduce

Introducing the Z64-HDG4 Heavy Duty/Race Sprung 4 Pad Clutch Kit by ACT, meticulously engineered to meet the demands of high-performance driving. Designed to deliver exceptional performance and reliability, this kit combines ACT's Heavy Duty pressure plate with a 4-pad, spring-centered race disc for optimal performance on the street or track.

ACT's Heavy Duty pressure plate utilizes an exclusive diaphragm design to increase clamp load, reduce deflection, and maximize clutch life. Each diaphragm undergoes a four-stage heat-treating process, ensuring unparalleled performance in even the most demanding conditions. Precision cover stampings provide rigidity and consistency for smooth gear transitions.

The 4-pad, spring-centered race disc features a spring-center design to properly damp torsional vibrations, resulting in quieter operation and increased resistance to failure under harsh conditions. ACT spring retainers employ wraparound spring windows and thicker stampings to enhance spring support, reduce stress concentrations, and improve strength and reliability.

Key Features:

  • Heavy Duty pressure plate for increased clamp load and reduced deflection
  • 4-pad, spring-centered race disc for enhanced performance and durability
  • Exclusive diaphragm design for extended clutch life
  • Precision cover stampings for consistent rigidity
  • Spring-centered design to dampen torsional vibrations
  • High-quality ceramic friction materials for maximum heat tolerance

Specifications:

  • Product Weight: 15.7 lbs.
  • Torque Capacity: 420 ft/lbs. (72% over OE)
  • Clutch Disc Diameter: 9.4 inches (240mm)
  • Input Shaft Diameter: 1 inch
  • Pressure Plate Type: Heavy Duty
  • Warranty: 12 Months

Recommended for high horsepower street or race use, the Z64-HDG4 kit undergoes rigorous testing, including 100% clamp load testing and dynamic computer balancing, ensuring reliability even at high RPMs.

Vehicle Fitment:

  • 1988-1992 Mazda 626 Turbo (2.2 L4 GAS FI 2184cc | SOHC | Turbocharged)
  • 1988-1992 Mazda MX-6 GT (2.2 L4 GAS FI 2184cc | SOHC | Turbocharged)
  • 1988 Mazda 929 Base (3.0 V6 GAS FI 2954cc | SOHC)
  • 1989-1991 Ford Probe GT (2.2 L4 GAS FI | SOHC | Turbocharged)

Experience the ACT difference with the Z64-HDG4 Heavy Duty/Race Sprung 4 Pad Clutch Kit - the ultimate choice for enthusiasts seeking uncompromising performance and reliability in their high-performance vehicles.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46847259123

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Glass
Belleville, US
★★★★★ 5
I stay on your foot they don’t slip in your shoe
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
This is the only socks I wear Under Armour because they stay in place I wear a size 8, but they’re more comfortable with a large instead of a medium, but I wear both because I have them already and you can pull them to stretch them out a little bit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
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Verified Purchase
Lauren
Los Angeles, US
★★★★★ 5
Great fit, truly doesn’t slide off heel
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium, Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
I’ve scoured all the lands looking for a no-show sock that was 1) thin, 2) quality, soft, breathable material, 3) didn’t dig into my feet/heels, 4) doesn’t shrink, and most importantly 5) stays on the back of my heel without a bulky non-slip rubber piece and these check all the boxes! Perfect for low profile women’s work shoes like Keds, etc. Not low enough for most flats though. I wear a women’s size 9.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2025
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Elliz
Los Angeles, US
★★★★★ 5
So good - I’m buying MORE.
Number of Items: 3, Color: White (3-pairs), Size: Medium
I’m gonna give you more detail than you need about why I’m buying these socks again. I’ve been the mom of girl athletes. I’ve been a model and a fashion director. I’ve worn every brand of shoe on the planet and never found a shoe that did NOT find a vulnerable spot on my foot to rub raw. Even my beloved white Jack Purcell sneakers. With that said - I don’t like socks. I’ve bought a TON of them in 35+ years.....all major brands. They shift. They lose their shape. They get holes in them and wear out too fast. Not these. I retired this year, and knowing I’d be in sneakers a lot, traveling, sightseeing ...... I bought these 6 months ago and have worn them constantly. I’ve traveled with them. I’ve washed them in hot water and bleach. The socks are like brand new. They are exactly the right cut so as not to be seen in a basic sneaker. The little silicone patch on the heel stays put. Not once have I had to dig down into my shoe and pull the sock back up. The socks have stayed soft and EXACTLY the same as the day they were new. Like I said - I am back to buy them again. Great quality!
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Reviewed in the United States on January 20, 2021
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Judy Fletcher
Carnegie, US
★★★★★ 5
No slip low socks
Number of Items: 3, Color: Black/White (3-pairs), Size: Medium
Perfect! ❤️ these!
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Reviewed in the United States on February 16, 2026
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Susan
Houston, US
★★★★★ 4
Stay put!
Number of Items: 3, Color: White/Neutral (3-pairs), Size: Medium
Nice and thin, soft, and stay put. I wear an 8 shoe and don’t like a thick sock taking up room. These socks are a bit tight on big toe. Wish they came in large.
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Reviewed in the United States on October 10, 2023

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