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Top Pick Supertech 12.90mm Max Lift Dual Valve Spring Kit | 1994-2005 Mazda Miata (sprk-1012-m18d) Limited Time 30% Off [ecxGhqBF]

$50.99 $163.99 -69%

Supertech 12.90mm Max Lift Dual Valve Spring Kit for 1994-2005 Mazda Miata Experience the pinnacle of performance with the Supertech 12.90mm Max Lift Dual Valve Spring Kit, designed specifically for the 1994-2005 Mazda Miata. This comprehensive kit,

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Supertech 12.90mm Max Lift Dual Valve Spring Kit for 1994-2005 Mazda Miata

Experience the pinnacle of performance with the Supertech 12.90mm Max Lift Dual Valve Spring Kit, designed specifically for the 1994-2005 Mazda Miata. This comprehensive kit, consisting of 16 precision-matched springs, is engineered to provide a complete valvetrain overhaul, ensuring peak engine performance and reliability. Supertech Spring/Retainer kits are renowned for their exceptional performance, quality, and value, making them the ideal choice for performance enthusiasts seeking the best the industry has to offer.

Key Product Specifications

The Supertech Spring/Retainer kit boasts a range of impressive specifications that set it apart from the competition. With a seat pressure of 75 @ 33.6 and an open pressure of 170 @ 10, this kit delivers optimal valve control and stability. The maximum lift of 12.90mm ensures enhanced airflow and power output, while the coil bind of 20.00mm and a rate of 9.6 contribute to a smooth and efficient engine operation. The kit includes SPR-TS1012 springs, RET-TS60/MA2 retainers, and SEAT-TS/MA18I seat locators, all designed to work seamlessly together for superior performance. The inner spring ID measures 15.20mm, the inner spring OD is 20.00mm, the outer spring ID is 20.00mm, and the outer spring OD is 27.50mm, ensuring a perfect fit for your Mazda Miata.

Applications and Benefits

The Supertech 12.90mm Max Lift Dual Valve Spring Kit is the perfect upgrade for your 1994-2005 Mazda Miata. This kit is designed to enhance the performance of your vehicle, providing increased power, improved throttle response, and a smoother driving experience. The gas nitriding process before shot peening improves fatigue life, ensuring long-lasting durability. With a set of 16 springs, 16 retainers, and 16 seat locators included in the box, this kit is a complete solution for your valvetrain needs. Whether you're a daily driver or a track enthusiast, the Supertech Spring/Retainer kit offers the performance and reliability you demand. Upgrade your Mazda Miata today and experience the difference that Supertech quality can make.

What Our Customers Say

January 2, 2026

Absolutely no complaints!

It's a really solid, quality product.

- Rosa D..

January 2, 2026

Absolutely no complaints!

A very good item. I love it.

- Joy C..

January 2, 2026

Absolutely no complaints!

The product works absolutely perfectly.

- Gloria B..

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