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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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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
4.1 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 5
Add more for special occasions
Color: Holo Silver Glitter Spray（2oz）
I love this, I have ordered several times for my daughter and I, it looks good if you just want to add a little touch of glitter in your hair for an everyday look or if you’re going out at night, you can add a little more to your clothes and skin. You don’t need to spray a lot, the can lasts us awhile and we use it pretty much every day.
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Perfect for cheer and dance!
Color: Rainbow Silver Glitter Spray（6.34oz）
Bought this for daughter's cheer comp. Entire team ended up using it and had to buy a new one! My daughter picks at normal glitter. This was super sparkly and sprayed on so easy! You can do a quick fast spray across the body or hair for a little shimmer or spray slower and get a super sparkle!
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Reviewed in the United States on March 12, 2026
★★★★★ 5
AMAZING!
Color: Rainbow Silver Glitter Spray（6.34oz）
WE LOVE THIS SPRAY!!!! I've already ordered it 3 times thats how often we use it! Very pigmented and it stays for a long time! A little goes a long way! Also easy to wash out and it smells AMAZING! I have subscribed for the spray because we love it so much! I also spray on my shoes to give them that little "umph". 10/10 recommend!
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Reviewed in the United States on April 23, 2026
★★★★★ 4
Pretty, does come off easily
Color: Holo Silver Glitter Spray（2oz）
Works well. Glitter does come off pretty easily. If on clothing you can easily pat it off of you which for me was a con but for others might be a pro.
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Amazing product
Love it!!!! Will be buying more. ❤️
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Reviewed in the United States on April 23, 2026