SKU: 50037496558

Z65-HDSS - HD/Perf Street Sprung

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Description

Z65-HDSS - HD/Perf Street SprungProduct Description: HD Perf Street Sprung Clutch Kit The HD Perf Street Sprung Clutch Kit, designated as Z65 HDSS, is engineered by ACT to provide optimal performance and durability for both street and race applications. With a weight of 15. 9 pounds and a torque capacity of 330 ft lbs, exceeding OE standards by 34%, this clutch kit delivers reliable power transfer and performance. Featuring an organic clutch disc material with a diameter of 9. 4

Product Description: HD/Perf Street Sprung Clutch Kit

The HD/Perf Street Sprung Clutch Kit, designated as Z65-HDSS, is engineered by ACT to provide optimal performance and durability for both street and race applications. With a weight of 15.9 pounds and a torque capacity of 330 ft/lbs, exceeding OE standards by 34%, this clutch kit delivers reliable power transfer and performance. Featuring an organic clutch disc material with a diameter of 9.4 inches (240mm) and an input shaft diameter of 1 inch, it offers a balance of performance and longevity.

At the core of this kit is ACT's most popular Heavy Duty pressure plate, designed to increase clamp load, reduce deflection, and maximize clutch life. Utilizing an exclusive diaphragm design and undergoing a meticulous four-stage heat-treating process, the Heavy Duty pressure plate ensures unparalleled performance and durability. Precision cover stampings guarantee rigidity and consistency for reliable operation in demanding conditions.

Paired with the Heavy Duty pressure plate is ACT's Performance Street disc, featuring premium organic materials with a high copper content for enhanced heat transfer and a steel-backed lining for greater burst strength and durability. With reduced marcel for faster shift action, this disc complements the Heavy Duty pressure plate, offering smooth positive engagement with OE to mild gear rattle.

Key Features:

  • Feel: Light to moderate pedal effort, smooth positive engagement, with OE to mild gear rattle.
  • Life: Longer friction life, extended by ACT's exclusive diaphragm design.
  • Quality: Carefully engineered, precisely assembled, and accurately balanced, with premium organic friction materials for heat tolerance and reduced fade.
  • Recommended Use: Suitable for both street and race use, catering to the needs of enthusiasts seeking reliable performance in various driving conditions.
  • ACT Difference: Rigorously tested to ensure 100% clamp load and dynamically computer balanced for smooth operation even at high RPMs.

Vehicle Fitment: This clutch kit is compatible with various Mazda RX-7 Turbo models from the 1986 to 1991 model years, including:

  • 1986-1991 Mazda RX-7 Turbo
  • 1988 Mazda RX-7 10th Anniversary

For drivers seeking a reliable clutch solution that delivers optimal performance for both street and occasional race use, the HD/Perf Street Sprung Clutch Kit from ACT is a top choice, offering durability, performance, and reliability in a variety of driving conditions.

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SKU: 50037496558

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4.6 ★★★★★
Based on 14 reviews
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Product Reviews
S
Verified Purchase
Serendipitygirl
Birmingham, US
★★★★★ 4
Interesting connections made.
Format: Paperback
I bought this because or had been referred to in several other excellent books I've read. Very scholarly and good case made but a bit dry and overdone/redundant at times when making a point. And if you've studied a lot, nothing really new revealed- but if just starting down this road, some great comparisons made.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 19, 2025
D
Verified Purchase
David Warner Mathisen
Massapequa, US
★★★★★ 5
Seminal
Format: Paperback
As many have noted, Hamlet's Mill is not an "easy" read, but it is an absolutely worthwhile experience not only to read but to re-read this seminal thesis on the transmission of ancient astronomical knowledge through mythology and legend. Perhaps the fact that a reader must wrestle with this text is part of the reason that it has generated so many fruitful inquiries and theories by later authors. The entire book is rich with ideas, many of which the authors drop and then pick up again and again later in the text, some of which are simply left for later analysts to pursue further on their own. Slice into it at any point and you will find a rich vein of material that can suggest new avenues for you to explore in the ancient history and literatures of the world. Sometimes an easy read or a text that hands you all of its answers and does the work for you is not "what the doctor ordered." Hamlet's Mill definitely makes more sense the second and even third time through. That in and of itself makes this book worth your while -- it's a gift that keeps on giving, a book you can keep on reading, even after you reach the end!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2011
C
Verified Purchase
CarPerz
Carnegie, US
★★★★★ 5
Love learning new things!
Format: Paperback
Love the book but unless you have a foreknowledge of myths from around the world and the experts that have written about them, you will need your phone next to you to look up everything that is being talked about. Like, on every page. Not an easy read.
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Reviewed in the United States on January 14, 2022
Y
Verified Purchase
Y. Teperman
Lexington, US
★★★★★ 5
Properly intellectual, and both demanding and rewarding as such
Format: Paperback
Anyone who plans to read this book is likely to know its premise already, so, I will not spend time or effort to recap it. All I can say is that the way the book is more eloquent, is altogether smarter, and more beautifully written than I expected. This is a true intellectual treat written with proper intellectual verve. So, no conspiracy theorists, or the simpleton believers in ancient aliens need not apply. If, however, you achieved a proper academic attainment - got your Masters or PhD and enjoy intellectual stimulation, this is a rare gem, to be digested slowly and deliberately, as no similar book is to be encountered any time soon. In other words, just a great book, presenting fascinating thoughts. It does not need anyone’s endorsement, as it is already a well-known entity within its field, yet, here it is – very heartily recommend!
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Reviewed in the United States on June 5, 2017
A
Verified Purchase
Amazon Customer
Phoenix, US
★★★★★ 5
Get it before it goes back out of print!
Format: Paperback
This book sat on my wish list for years while the price hovered just a bit too high for my liking. My patience has been rewarded with a back in print price that makes getting it a no-brainer. That said, I can't say I believe the main theory of this book, but it is a good start and an enjoyable read regardless. It seems to me that authors feel a need to propound an overarching and impossible-to-prove theory, in order to write some comparative mythology. I was brought to this book a long time ago after reading Charles Hapgood's Map of ancient Sea Kings. Another good author in the same vein is Gavin White, who wrote Babalonian Star Lore and several others.
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Reviewed in the United States on February 16, 2018

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