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- USA
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Ships within 48 hours · Estimated delivery Sep 27 - Oct 2
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Description
SUPERTECH (HEVN-1006F) EXHAUST VALVESupertech uses over 20 years of manufacturing experience to design and produce their Valves. Intensive testing and working closely with engine builders provides continuous improvements and provides the market with the best possible product for every application. High flow rate, durability and quality are all of great concern. Supertech understands that each motor is unique in its requirement and demands. There fore Supertech offers valves in a range
Supertech uses over 20 years of manufacturing experience to design and produce their Valves. Intensive testing and working closely with engine builders provides continuous improvements and provides the market with the best possible product for every application. High flow rate, durability and quality are all of great concern.
Supertech understands that each motor is unique in its requirement and demands. There fore Supertech offers valves in a range of materials to suit any motor.
* Stainless - Made as a one piece forged valve for higher strength and reliability. Supertech uses mostly EV8 (21-4N) for Intake and Exhaust Valves, however there are other alloys that are used with different heat treatments to manufacture Valves for specific applications.
To address the issue of high heat, Supertech uses two different types of coatings:
Chrome Coating - Widely used in performance valves
Black Nitride - This is a hardening treatment that provides a smooth surface then chromed valves and produces less friction between stem and guide.
* Inconel 751 - Nickel Base Alloy - Nickel base alloy is used for exhaust valves that reach very high temperatures, such as those in turbo or supercharged applications.
Supertech Valves are sold *Per Valve*. For Example, when order for a Model that requires 16 Valves, order ‘Quantity: 16’
Supertech understands that each motor is unique in its requirement and demands. There fore Supertech offers valves in a range of materials to suit any motor.
* Stainless - Made as a one piece forged valve for higher strength and reliability. Supertech uses mostly EV8 (21-4N) for Intake and Exhaust Valves, however there are other alloys that are used with different heat treatments to manufacture Valves for specific applications.
To address the issue of high heat, Supertech uses two different types of coatings:
Chrome Coating - Widely used in performance valves
Black Nitride - This is a hardening treatment that provides a smooth surface then chromed valves and produces less friction between stem and guide.
* Inconel 751 - Nickel Base Alloy - Nickel base alloy is used for exhaust valves that reach very high temperatures, such as those in turbo or supercharged applications.
Supertech Valves are sold *Per Valve*. For Example, when order for a Model that requires 16 Valves, order ‘Quantity: 16’
Head Diameter: 30.00mm (STD) Flat
Length: 106.45mm
Material: Black Nitrated
Stem Diameter: 5.45mm
Length: 106.45mm
Material: Black Nitrated
Stem Diameter: 5.45mm
| YEAR | MAKE | MODEL | CYLINDERS | LITERS | FUEL TYPE | FUEL DELIEVERY | ASPIRATION | ENGINE DESIGNATION | NOTES |
| 1997 - 2001 | HONDA | PRELUDE | ALL | ALL | ALL | ALL | ALL | H22A4 | |
| 1993 - 1996 | HONDA | PRELUDE | ALL | ALL | ALL | ALL | ALL | H22A1 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Amazing product!
Color: Black, Size: 6FT
Love this! Wish I would know about them sooner.
So nice to have power on the top side of the desk.
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Reviewed in the United States on May 7, 2026
★★★★★ 4
3 inches plus!
Color: Black, Size: 6FT
It works well BUT you will need a little more than a three inch opening. I ordered this as a replacement for a plain plastic grommet. I had to buy an attachment for my drill to make the hole a tad bigger and smooth out any bumps in the hole.
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Reviewed in the United States on July 19, 2025
★★★★★ 5
Quality Product
Color: Black, Size: 6FT
Easy to install and comes pre-wired. This works as advertised and is easy to add to a new furniture build or retrofit into existing furniture.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Great for price
Color: Black, Size: 6FT
Worked great in the predrilled spaces in retail environment on counters. Had to do minor shaving of the existing holes but worked great after that. Only took 3 mins to correct. Well hidden and flush with counter.
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Reviewed in the United States on February 23, 2026
★★★★★ 1
Worthless
Color: Black, Size: 6FT
Would leave 0 stars if possible.
Things thing f****** suck!
Don’t buy them, don’t listen to the positive reviews. Don’t waste your money!
They don’t work. Charging ports shut off after you unplug your device. Have to unplug and replug in charging cables and ac plugs everytime you want to use them or else they won’t work.
Cheap unreliable product that matches the cheap price.
Spend $5 more and get a product that actually works!!!!
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Reviewed in the United States on February 19, 2026