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Supertech Inconel Exhaust Valve MAEVI-1204 for Mazda Miata 1.8L 1994-2005
$38.61

If you're looking to really push your Mazda Miata's performance, the Inconel Exhaust Valve by Supertech is a solid upgrade. I've been using these valves for a while now, and let me tell you, they deliver. Made from Inconel, a material known for its incredible heat resistance and strength, these valves are built to last. They’re not just pretty parts; they’re designed to handle the demands of a high-performance engine without breaking a sweat.

Let’s talk specs for a second. The head diameter is a standard 28.00mm, and the stem diameter measures in at 5.94mm. The length is 102.60mm, which is just a touch longer than stock, giving you that perfect fit. This isn’t just about numbers though; it’s about how these valves can help your engine breathe better and perform at its peak. You’ll notice the difference in responsiveness and power, especially if you’re pushing your Miata on the track or just enjoying a spirited drive on back roads.

What I really appreciate is how well these valves are crafted. Supertech has a reputation for precision engineering, and you can feel that when you hold one of these valves in your hand. They fit like a glove and are designed to provide years of worry-free service. No one wants to be constantly replacing parts, right? With these, you can trust that you’re making a smart investment in your engine's longevity.

These valves are specifically made for the Mazda Miata 1994-2005 models, so if you’ve got one of those, you’re in luck. Whether you have a 1.8L from 1994-1997 or the later models up to 2005, these valves will fit right in and complement your engine's performance. If you're serious about getting the most out of your ride, give these valves a shot.

Other Part Numbers:
Supertech #sptMAEVI-1204

Proposition 65

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

Vehicle Make/Model
Mazda Miata 1994-1997, 1999-2005 Base
Mazda Miata 1994-1997 M Edition
Mazda Miata 1997 STO
Mazda Miata 1999 10th Anniversary
Mazda Miata 2000-2003 SE
Mazda Miata 2000-2005 LS
Mazda Miata 2003 Shinsen
Mazda Miata 2004-2005 Mazdaspeed

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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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