ACT XACT Flywheel Prolite for Mazda Miata (NA/NB) – Unleash Unrivaled Performance

Upgrade your Mazda Miata with the ACT XACT Flywheel Prolite (Part #600255) and experience the ultimate in engine response and acceleration. Designed for drivers who demand lightning-fast performance and precision, this flywheel is the perfect addition to your street or track build.

Note: For 1990-1993 Miatas, this flywheel must be used with a 1.8L clutch kit.

Key Features & Benefits:

  • Dramatic Performance Gains:

    • Lightened design delivers noticeably faster engine response and acceleration, perfect for dominating on the track or the road.
  • Built to Last:

    • Heat-treated forging provides exceptional strength and toughness to handle extreme conditions.
    • Induction-hardened ring gears ensure maximum durability and longevity.
  • Reliable One-Piece Construction:

    • Eliminates the risk of warped inserts or loose ring gears for consistent performance.
    • Efficiently transfers heat from the clutch disc to maintain reliability under intense use.
  • Precision Engineering:

    • Forged, CNC machined, and dynamically balanced for smooth operation even at high RPMs, ensuring reliability during every race or spirited drive.
  • Track-Ready Performance:

    • Designed with racers in mind, this flywheel is ideal for those seeking unparalleled throttle response and reduced rotating mass.

Why Choose ACT?

ACT’s commitment to performance and quality ensures you’re equipping your Miata with a flywheel engineered to perform at the highest levels.

Take the Lead – Order Now!

Transform your Miata into a precision machine with the ACT XACT Flywheel Prolite. Whether you're chasing track times or carving canyon roads, this flywheel delivers the edge you need.


Installation Instructions


This Part Fits:

Year Make Model Submodel
1999 Mazda Miata 10th Anniversary
1990-1997,1999-2005 Mazda Miata Base
1993 Mazda Miata LE
2000-2005 Mazda Miata LS
1994-1997 Mazda Miata M Edition
2004-2005 Mazda Miata Mazdaspeed
1991,2000-2003 Mazda Miata SE
2003 Mazda Miata Shinsen
1997 Mazda Miata STO

Shipping Policies

Free Shipping on all orders over $56.

For orders under $56, we offer ground shipping for only $9.99.

Need your parts faster? Flat-rate expedited shipping options are available.

Standard delivery in 3-5 business days or less.

For in-stock items, our free ground shipping reaches any of the 48 contiguous U.S. states in 5 business days or less.

International Shipments

Garage 56 Engineering provides the best service and quality parts to customers all over the globe every day. We understand that purchasing parts internationally can be stressful and would like you to know we are committed to helping at every step of the way.

Transit times listed on the website are estimates and will vary depending on your location as well as the amount of time it will take your government to process the order through customs. In most cases, orders take around a week to arrive but can be closer to two to three weeks to some countries.

You may be charged a duty (tax) on your order. We do not handle this tax and your local customs agency will charge you the correct amount per your local laws. It is your responsibility to review and understand these taxes when ordering.

Please note that our fitment data and vehicle selector is for United States of America Market cars only. If you are searching for parts for an international car please search for exact part numbers.


Return Policies

We have a 365-day return policy, which means you have 1 year after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at info@garage-56.com. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

You can always contact us for any return question at info@garage-56.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.

Related Products

Recently Viewed Products