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Supertech Dual Valve Spring Kit for Mazda Miata 1989-1993, 16 Springs & Retainers - SPRK-MM16D-2

Supertech Dual Valve Spring Kit Mazda Miata 1989-1993 for 1990-1993 Mazda Miata SPRK-MM16D-2 | Vivid Racing

If you're diving into a full valvetrain overhaul, you really can't go wrong with the Supertech Spring and Retainer kits. These aren't just any springs and retainers; they’re precision-matched sets designed with performance enthusiasts in mind. I’ve had my hands on these kits, and let me tell you, they’re built to deliver quality and reliability that’s tough to beat.

So, what do you get in the box? Well, you’ll find 16 springs, 16 retainers, and 16 seat locators. Each piece is crafted to work seamlessly together, ensuring that your engine runs smoother and more efficiently. It’s like giving your ride a new heartbeat—one that can handle the stress of high RPMs without breaking a sweat.

Now, let’s talk specs because I know that’s what really matters. The seat pressure sits at a solid 74 lbs at 35mm, while the open pressure cranks up to 195 lbs at 10mm. That means these springs are ready to handle some serious lift, with a max lift capability of 14.30mm. And with a coil bind of 20.70mm, you won’t have to worry about them compressing too much under pressure. The rate is 12.1, which gives you a nice balance of responsiveness and strength.

These kits are specifically designed for the Mazda Miata from 1989 to 1993, so if you’re rocking one of those, you’re in luck. The fitment is spot on, and you won’t have to deal with any annoying modifications. Just drop them in, and you’re good to go.

To wrap it up, if you’re looking to upgrade your Miata’s valvetrain, the Supertech Spring and Retainer kits are a solid investment. They strike that perfect balance of performance, quality, and value that every car enthusiast dreams of. Trust me, your engine will thank you.

Other Part Numbers:
Supertech #sptSPRK-MM16D-2

Proposition 65

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

Vehicle Make/Model
Mazda Miata 1990-1993 Base
Mazda Miata 1991 SE
Mazda Miata 1993 LE

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Who is Supertech?

Supertech is a company located in Silicon Valley San Jose, California. It is the place where companies with the most cutting-edge technology are located. It allows Supertech to gain access to the latest technology that helps them create high-quality products.  Supertech is known for manufacturing some of the best aftermarket internal engine parts in the industry. Today, they are considered the leading brand in their market segment.

Valve Train Component Experts

With over 30 years of experience, Supertech was able to develop products that meet the demands of their customers. They offer high-performance valves and valvetrain components that are used by many engine builders and tuners everywhere.

Racer’s Brand Of Choice

Supertech provides the motorsport industry with top-notched products for virtually any type of racing discipline. Whether it’s Road Racing, Drag Racing, or Rally, they have the right parts for you. Each piece is carefully designed and manufactured to provide optimum performance and give racers the competitive advantage they need to win championships.

Purchase Supertech Products At Vivid Racing

If you are in the market for high-quality performance parts for your engine, Supertech is the brand for you. The company has always been on edge in creating innovative products that would keep up with the fast-changing automotive trend. Whether for the tracks or the street, Supertech guarantees that you will only get the best products from them. To know more about Supertech, visit Vivid Racing and check out their list of parts that fit your specific needs.



Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.

Supertech Performance Inc. shall not, under any circumstances, be liable for any special, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue, cost of purchased or replacement goods, or claims of customers of the purchase, which may arise and/or result from sale, installation or use of these parts.

The sole obligation of Supertech Performance Inc., shall be limited only to the products to be found defective, in either workmanship or material, after inspection performed by our company. This Limited Warranty applies only to the original purchaser of the product and only covers the replacement or repair of the product at our election.

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