Supertech Exhaust Valves for 2012-2015 Honda Civic Si K24Z7 Engines
Supertech Exhaust Valves for 2012-2015 Honda Civic Si K24Z7 Engines

Supertech Exhaust Valves for 2012-2015 Honda Civic Si K24Z7 Engines

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Exhaust Valves for 2012-2015 Honda Civic Si K24Z7 Engines

HEVN-1030D
Head Diam: 31mm (STD)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish

HEVN-1030F
Head Diam: 31mm (STD)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat

HEVI-1030D

Head Diam: 31mm (STD)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish

HEVN-1033F
Head Diam: 31.5mm (+0.5mm)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Black Nitride
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Flat

HEVI-1033D
Head Diam: 31.5mm (+0.5mm)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish

HEVI-1035D
Head Diam: 32.00mm (+1mm)
Stem Diam: 5.45mm
Length: 108.80mm
Material: Inconel
Groove Type: Single Groove
Valve Type: Exhaust
Face Type: Dish

*Single Valves Are Also Available In The Drop Down Menu Below*

Our stainless steel intake valves are manufactured from an enhanced version of EV8 (21-4N) steel. We have chosen this material specifically because it’s the highest grade of steel available and provides the strength to withstand just about any application. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for even greater strength at higher temperatures. Our stainless steel valves are one piece forged valves, and depending on the application feature hardened tips, hardened seats, swirl polish, undercut, and our black nitride coating. Our black nitride coated valves feature a harder surface area and a smoother finish, providing less friction and subsequently longer life.