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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
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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
4.3 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 3
Fungal acne
Triggered fungal acne.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 21, 2026
★★★★★ 1
Full Face Breakout
Small breakouts all over my face within 48 hours of use.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Saved my daughter’s skin
My 21 yr old has gone from clear skin to now having cystic acne and whilst trying to get to the source of it, her skin has been painfully inflamed and constant dark red breakouts. We have tried other professional skincare’s, “no downtime” peels designed for acne, which made it worse etc. This product Finally was what gave her skin some relief, calmed the pain and inflammation, nearly stopped the breakouts and is allowing her skin to heal up. She said it felt so much better immediately after starting using it. And is so grateful for the redness and pain relief.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
My go to makeup removal wipes
Size: 1 Count (Pack of 25)
CeraVe makeup wipes are perfect for traveling. Plant based, non sticky, makes makeup removal a snap and best of all it first irritate my sensitive skin.
Open it up fully and simply wipe away your makeup. Place over eyes for about a minute to dissolve away mascara, eyeshadow and eyeliner. Truly it’s just that easy to easy to use. For me there’s no mess or fuss with using these wipes. They are a bit pricey, but you’re paying for a quality product.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Hydrating & Effective
Size: 1 Count (Pack of 25)
They are perfectly moist and leave my face feeling soft and hydrated without burning my skin like a lot of other makeup remover wipes do. They take off my makeup very easily without having to use much pressure.
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Reviewed in the United States on March 15, 2026