Supertech HEVI-1030D x 8 Valves

Supertech Valves (HEVI-1030D x 8) for a 2002-2006 Acura RSX, 2004-2008 Acura TSX, 2003-2008 Honda Accord, 2002-2011 Honda Civic Si and 2000-2003 Honda S2000. Exhaust Valves - Set of 8 | 31.00mm ( 1.0)Dish | HONDA K20 /K24 2.0lts / 2.4lts DOHC VTEC.

Supertech HEVI-1030D x 8  Valves image 1
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Category: Valves
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Supertech Valves
Part #:
HEVI-1030D x 8
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Fitment Information:


Exhaust Valves - Set of 8 | 31.00mm (+1.0)Dish | HONDA K20 /K24 2.0lts / 2.4lts DOHC VTEC

2002 - 2006AcuraRSX See Notes Above
2004 - 2008AcuraTSX See Notes Above
2003 - 2008HondaAccord See Notes Above
2002 - 2011HondaCivicSi See Notes Above
2000 - 2003HondaS2000 See Notes Above

See partnumber notes and applications notes above for specific product information.

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.

California Residents:
WARNING: Cancer & Reproductive Harm

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