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  See more parts for Mazda 626
Select the year of your Mazda 626:
Supertech Dual Valve Spring Kit for Mazda 626/MX-6/Protege 2.0L 1993-2002 - SPRK-TC25D-MP

If you're diving into a valvetrain overhaul for your Mazda, you really need to check out the Supertech Spring and Retainer kits. These aren’t just any springs; they’re precision-engineered dual springs designed specifically for performance enthusiasts. I’ve used them myself, and let me tell you, they deliver on all fronts—performance, quality, and value.

What I love about these kits is how they feel like they were made for your engine. The press seat comes in at 85lbs at 34.80mm, which means they hold up under pressure without losing their edge. With a maximum lift of 13.80mm, these springs can really open up your engine's potential. And the coil bind at 21.00mm? That’s just another way of saying these springs are built to last.

Now, let’s talk about the numbers. The rate is 12.60 lbs/mm, which is pretty impressive for a dual spring setup. You also get the RET-2500/T1 retainers, which fit perfectly with the SPR-TC25D springs. Plus, there are spring shims (SS-3012) and valve stem seals (VS-T6SM) included, so you’ve got everything you need for a smooth installation.

These kits are compatible with a few Mazda models from the '90s, including the 626 (1993-2002), MX-6 (1993-1997), and Protege (1993-2002). So if you’re working on any of these, you’re in luck. It’s all about making your ride feel more alive, and with Supertech, you’re not just throwing money at parts—you’re investing in performance that you can actually feel on the road.

Other Part Numbers:
Supertech #sptSPRK-TC25D-MP

Proposition 65

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

Vehicle Make/Model
Mazda 626 1993-2002 ES
Mazda 626 1993-2002 LX
Mazda 626 1993-1998 DX
Mazda MX-6 1993-1997 Base
Mazda MX-6 1993-1997 LS
Mazda MX-6 1996 M Edition
Mazda Protege 1993-2002 LX
Mazda Protege 1993-2002 DX
Mazda Protege 1994 Base
Mazda Protege 1995 S
Mazda Protege 1995-2002 ES
Mazda Protege 2001 MP3
Mazda Protege 2002 SE

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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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