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  See more parts for Mazda Miata
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ACT HD/Perf Street Sprung Kit Mazda Miata 1990-1997 - ZM1-HDSS

If you're looking to elevate your Mazda Miata's performance, the ACT ZM1-HDSS Advanced Clutch HD/Perf Street Sprung Kit might just be your new best friend. This kit combines the heavy-duty pressure plate that ACT is known for with their most popular street disc, making it a solid choice for both daily driving and spirited weekend jaunts. The heavy-duty pressure plate features a unique diaphragm design that not only boosts clamp load but also minimizes deflection, which means you get a longer-lasting clutch that can take a beating. Plus, each diaphragm goes through a four-stage heat-treating process, so you know it?s built to perform under pressure.

The pressure plate is all about precision too. With its carefully stamped cover, it offers the kind of rigidity and consistency that you'd expect from a high-performance component. Now, let?s talk about the Performance Street disc. It?s made from premium organic materials, packed with high copper content for better heat transfer, and features a steel-backed lining for added durability. This means you can shift faster with less worry about wear and tear, which is a big win on the track or the street.

Installation is straightforward, and if you need a little help, you can find the instructions here. Just keep in mind that you'll need to use your factory flywheel with this kit.

What can you expect from this kit? Well, the pedal effort is light to moderate, and engagement is smooth, which is perfect for those who want a responsive feel without the harshness. Thanks to ACT's diaphragm design, you can also expect longer friction life, which is a real bonus. And whether you?re cruising around town or hitting the track, this kit is engineered for both street and race use.

Here are some specs that might interest you:

  • Clutch Disc Diameter: 7.9 in (200 mm)
  • Input Spline Quantity: 22
  • Torque Capacity: 195 ft/lbs (that's a 45% increase over OE)
  • Product Weight: 10.8 lbs
  • Disc Type: Sprung Solid

With 100% clamp load testing and dynamic computer balancing, this kit promises smooth operation even at high RPMs. And yes, it comes with grease and a pilot bearing, so you're covered on those fronts.

In short, if you want a clutch kit that?s tough, reliable, and ready to perform, the ACT ZM1-HDSS is a no-brainer for your 1990-1997 Mazda Miata. It?s built for enthusiasts who know what they want and aren?t afraid to push their cars to the limit.

Other Part Numbers:
ACT #actZM1-HDSS

Proposition 65

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

Vehicle
1990-1997
 Mazda Miata

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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.

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