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Supertech Black Nitride Exhaust Valve for Subaru EZ30 H6 1st Gen, 31mm Head, Stainless Steel - SEVN-1030D

If you’re tinkering with a Subaru EZ30 H6 1st Gen, you’re probably looking for ways to squeeze out every bit of power and efficiency. That’s where the Supertech Black Nitride Exhaust Valve comes into play. This isn’t just any valve; it’s designed specifically for your engine, and it’s built to last.

Let’s break down what makes this valve a solid choice:

  • Head Diameter: At 31.00mm, this valve is slightly oversized by 0.5mm, which helps with better airflow. More air means better combustion, and that’s what you want for that extra kick.
  • Material: Made from 23-8N stainless steel, it’s tough as nails. This material can handle the heat and pressure of high-performance driving without warping or failing.
  • Groove Type: It features a single groove, making it easier to install and ensuring a snug fit.
  • Length: At 103.25mm, it fits perfectly in the valve guides of your engine, keeping everything running smoothly.
  • Stem Diameter: With a stem diameter of 5.45mm, it’s designed to maintain the right balance between strength and weight, which is crucial for a responsive throttle.

As for fitment, this valve is tailored for the Subaru EZ30 H6 1st Gen. You won’t have to worry about compatibility issues here. Just pop it in, and you’re good to go. A few folks have noted that after installing these valves, they noticed a nice bump in performance, especially at higher RPMs. It’s all about getting the right airflow and exhaust flow, and this valve helps make that happen.

So, if you’re serious about your Subaru and want to take it to the next level, consider swapping out your stock exhaust valves for these Supertech beauties. They’re built for enthusiasts who care about the details and want to keep their ride running strong.

Other Part Numbers:
Supertech #sptSEVN-1030D

Proposition 65

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

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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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