If you’re looking to squeeze every bit of performance out of your engine, the Black Nitrided Exhaust Valve by Supertech is definitely worth your attention. I’ve had the chance to install these on my ride, and let me tell you, they really make a difference. These valves are crafted with some serious tech and precision, which is evident as soon as you hold them in your hand. The black nitrided finish not only looks slick but also enhances durability—definitely a plus when you're pushing your engine to its limits.
Each set comes with four valves, and they’re designed to fit a range of Audi and Volkswagen models from the late '80s to the early 2000s. I’ve seen them work wonders in my Volkswagen Golf, and I can confidently say they help unlock that extra horsepower you didn’t know you were missing. The head diameter is 34.00mm (+1.0), and the stem diameter is a clean 7.00mm, making them a solid choice for anyone looking to upgrade. With a length of 90.95mm, they fit snugly, ensuring no leaks or performance drops.
What really stands out is how reliable they are. I’ve put plenty of miles on them, and they’ve held up beautifully. No weird noises, no issues—just smooth sailing. They’re built to meet or exceed tough industry standards, so you can trust they’ll last for years without giving you headaches.
Here’s a quick list of what they fit, in case you’re wondering:
So if you’re in the market for some exhaust valves that deliver on performance and reliability, give these a shot. You might just find yourself smiling a little wider behind the wheel.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Vehicle Make/Model | Year | Trims |
|---|---|---|
| Audi 4000 Quattro | 1985-1987 | S |
| Audi 4000 Quattro | 1986-1987 | CS |
| Audi 80 | 1988-1990 | Base |
| Audi 90 | 1988 | Base |
| Volkswagen Beetle | 1998-1999 | Base |
| Volkswagen Beetle | 1998 | TDI |
| Volkswagen Beetle | 1999-2003 | GLS |
| Volkswagen Beetle | 1999-2003 | GLX |
| Volkswagen Beetle | 1999-2003 | GL |
| Volkswagen Beetle | 1999 | Lujo |
| Volkswagen Beetle | 2000-2001 | GLS Turbo |
| Volkswagen Beetle | 2000-2001 | GLX Turbo |
| Volkswagen Beetle | 2001-2003 | GLX Sport Turbo |
| Volkswagen Beetle | 2001-2002 | Sport |
| Volkswagen Beetle | 2002-2003 | GLS Sport Turbo |
| Volkswagen Beetle | 2002-2003 | Turbo S |
| Volkswagen Beetle | 2003 | GLS Sport |
| Volkswagen Beetle | 2003 | Cabrio |
| Volkswagen Beetle | 2003 | GLS Edicion especial |
| Volkswagen Corrado | 1990-1992 | G60 |
| Volkswagen Corrado | 1992 | SLC |
| Volkswagen EuroVan | 1997 | Camper |
| Volkswagen EuroVan | 1999 | MV |
| Volkswagen EuroVan | 1999 | GLS |
| Volkswagen Golf | 1985-1986, 1988-1993, 1995 | Base |
| Volkswagen Golf | 1985-1987, 1989-1991, 1993-1999 | GTI |
| Volkswagen Golf | 1987-1989, 1992-1998 | CL |
| Volkswagen Golf | 1987-1992 | GTI 16-Valve |
| Volkswagen Golf | 1987-1988, 1994 | GT |
| Volkswagen Golf | 1987-1988 | C |
| Volkswagen Golf | 1987-1999 | GL |
| Volkswagen Golf | 1989-1992 | Basico |
| Volkswagen Golf | 1990-1992 | GTI 8-Valve |
| Volkswagen Golf | 1991 | Eclipse |
| Volkswagen Golf | 1994 | Limited Edition |
| Volkswagen Golf | 1995 | Celebration Edition |
| Volkswagen Golf | 1995-1996, 1999 | GLS |
| Volkswagen Golf | 1995-1996 | Manhattan |
| Volkswagen Golf | 1995-1999 | GTI VR6 |
| Volkswagen Golf | 1995-1997 | City |
| Volkswagen Golf | 1995-1996 | Sport |
| Volkswagen Golf | 1996-1999 | TDI |
| Volkswagen Golf | 1996-1998 | Atlanta |
| Volkswagen Golf | 1997-1998 | K2 |
| Volkswagen Golf | 1997 | Jazz |
| Volkswagen Golf | 1997 | Trek |
| Volkswagen Golf | 1998-1999 | MI |
| Volkswagen Golf | 1999 | Wolfsburg Edition |
| Volkswagen Jetta | 1985-1988, 2002-2004 | GLI |
| Volkswagen Jetta | 1985-2004 | GL |
| Volkswagen Jetta | 1985-1995, 1999 | Base |
| Volkswagen Jetta | 1987-1988 | LX |
| Volkswagen Jetta | 1987-1988 | GX |
| Volkswagen Jetta | 1987-1992 | GLI 16-Valve |
| Volkswagen Jetta | 1987, 1996, 1998-1999, 2001, 2003 | Wolfsburg Edition |
| Volkswagen Jetta | 1988-1992, 1994-1995 | Carat |
| Volkswagen Jetta | 1988 | CX |
| Volkswagen Jetta | 1989-1991 | Basico |
| Volkswagen Jetta | 1990-1992 | GLI Carat |
| Volkswagen Jetta | 1990-1992 | GTX 16-V |
| Volkswagen Jetta | 1993-2004 | GLS |
| Volkswagen Jetta | 1994 | Limited Edition |
| Volkswagen Jetta | 1994-2003 | GLX |
| Volkswagen Jetta | 1994-1995, 1997-1999 | CL |
| Volkswagen Jetta | 1995 | Celebration Edition |
| Volkswagen Jetta | 1995 | City |
| Volkswagen Jetta | 1995-1998 | VR6 |
| Volkswagen Jetta | 1996 | Atlanta |
| Volkswagen Jetta | 1996-2004 | TDI |
| Volkswagen Jetta | 1996-1998, 2002-2004 | Europa |
| Volkswagen Jetta | 1996 | Trek |
| Volkswagen Jetta | 1997-1998 | GT |
| Volkswagen Jetta | 1997, 2003 | Jazz |
| Volkswagen Jetta | 1998 | K2 |
| Volkswagen Jetta | 1999 | GLS Confort |
| Volkswagen Jetta | 1999 | VR6 Carat |
| Volkswagen Jetta | 1999-2000 | GLS VR6 |
| Volkswagen Jetta | 1999-2002 | GLX VR6 |
| Volkswagen Jetta | 2000-2001 | GLS Turbo |
| Volkswagen Jetta | 2000-2002 | GL Confort |
| Volkswagen Jetta | 2001 | GLS Variant |
| Volkswagen Jetta | 2001 | GL Variant |
| Volkswagen Jetta | 2001 | GLS Wolfsburg |
| Volkswagen Jetta | 2002-2003 | Confortline |
| Volkswagen Jetta | 2002-2003 | Variant Comfortline |
| Volkswagen Jetta | 2002-2004 | Trendline |
| Volkswagen Jetta | 2002-2004 | Sportline |
| Volkswagen Jetta | 2002-2003 | Highline |
| Volkswagen Jetta | 2002-2003 | Variant Trendline |
| Volkswagen Jetta | 2003 | Europa Wolfsburg |
| Volkswagen Jetta | 2003 | Edicion Limitada |
| Volkswagen Jetta | 2003 | Trendline Wolfsburg |
| Volkswagen Jetta | 2004 | GLI 50 Aniversario |
| Volkswagen Jetta | 2004 | Europa 50 Aniversario |
| Volkswagen Jetta | 2004 | Comfortline |
| Volkswagen Passat | 1990-1991, 1993-1994 | Base |
| Volkswagen Passat | 1990-1993 | GL |
| Volkswagen Passat | 1991-1992 | GL Variant |
| Volkswagen Passat | 1991-1993 | Syncro |
| Volkswagen Passat | 1992 | CL |
| Volkswagen Passat | 1993, 1995-1996, 1998-2000 | GLS |
| Volkswagen Passat | 1993-2000 | GLX |
| Volkswagen Passat | 1995-1997 | GLX VR6 |
| Volkswagen Passat | 1996-1997 | TDI |
| Volkswagen Passat | 1999-2000 | 1.8T |
| Volkswagen Passat | 1999-2000 | V6 |
| Volkswagen Passat | 2000 | 4 Motion |
| Volkswagen Scirocco | 1984-1988 | Base |
| Volkswagen Scirocco | 1986-1988 | 16-Valve |

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 ExpertsWith 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 ChoiceSupertech 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 RacingIf 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.