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Supertech Black Nitrided Exhaust Valve Set of 8 +0.5mm Oversize for Acura Integra, Honda Civic, CR-X 1986-1991
$187.39
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If you’re looking to squeeze every last bit of performance out of your ride, the Black Nitrided Exhaust Valves by Supertech are a solid choice. These bad boys are crafted with some serious attention to detail, and let me tell you, they really deliver on their promise. I’ve put them through their paces, and they’ve held up like a champ.

First off, you’re getting a set of 8 valves, which is perfect if you’re planning a full engine rebuild or just looking to upgrade your current setup. The 27.50mm head diameter (+.5mm oversize) and 6.45mm stem diameter means they fit snugly while allowing for optimal airflow. And with a length of 105.80mm, these valves are designed to work seamlessly with your engine's mechanics.

What really sets these valves apart is the black nitrided material. This isn’t just for looks; it enhances durability and helps reduce wear over time. I’ve noticed a significant improvement in performance, especially when it comes to getting the most out of my engine. You can expect these valves to keep running smoothly for years, giving you that peace of mind when you’re pushing your car to its limits.

These valves are compatible with a few classic models too, like the 1986-1989 Acura Integra, 1988-1991 Honda Civic, and 1988-1991 Honda CR-X. So if you’re driving one of these gems, you’re in luck. They meet or exceed all the industry standards, so you know you’re getting quality that won’t let you down.

In the end, if you want to enhance your vehicle’s performance while maintaining reliability, these Supertech exhaust valves are definitely worth considering. They’ve got the specs and the durability to back up their performance, and I can’t recommend them enough.

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Vehicle Make/Model
Acura Integra 1986-1989 LS
Acura Integra 1986-1989 RS
Acura Integra 1987-1988 LS Special Edition
Honda CRX 1988-1991 Si
Honda CRX 1988 DX
Honda CRX 1988-1991 HF
Honda CRX 1989-1991 Base
Honda Civic 1988-1991 DX
Honda Civic 1988-1991 LX
Honda Civic 1988-1991 Base
Honda Civic 1988-1989 Wagovan
Honda Civic 1988 SE
Honda Civic 1988-1991 RT 4WD
Honda Civic 1989-1991 CX
Honda Civic 1989-1991 Si
Honda Civic 1990-1991 EX

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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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