Supertech: Valves : Subaru: EJ20 / EJ25 / WRX / STI TURBO DOHC / IMPREZA WRX / STI - Sold Individually

* See dropdown menu above for options.


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.

INTAKE VALVES

SIVN-1010 - Black Nitrided Intake Valve
• Head Diam: 36.00mm (std)
• Stem Diam: 5.96mm
• Length: 104.35mm (std)

SIVN-1012 - Black Nitrided Intake Valve
• Head Diam: 36.50mm (+0.5)
• Stem Diam: 5.96mm
• Length: 104.35mm (std)

SIVN-1012/2 - Black Nitrided Intake Valve
• Head Diam: 36.50mm (+0.5)
• Stem Diam: 5.96mm
• Length: 103.85mm (short)

SIVN-1014 - Black Nitrided Intake Valve
• Head Diam: 37.00mm (+1.0)
• Stem Diam: 5.96mm
• Length: 104.35mm (std)

SIVN-1014/2 - Black Nitrided Intake Valve
• Head Diam: 37.00mm (+1.0)
• Stem Diam: 5.96mm
• Length: 103.85mm (short)

EXHAUST VALVES

SEVN-1010 - Black Nitrided Exhaust Valve
SEVI-1010 - Inconel Exhaust Valve
SEVI-1010-HS - Sodium Filled Exhaust valve
• Head Diam: 32.00mm (std)
• Stem Diam: 5.96mm
• Length: 104.7mm (std)

SEVI-1012 - Inconel Exhaust Valve
• Head Diam: 32.50mm (+0.5)
• Stem Diam: 5.96mm
• Length: 104.7mm (std)

SEVI-1012/2 - Inconel Exhaust Valve
• Head Diam: 32.50mm (+0.5)
• Stem Diam: 5.96mm
• Length: 104.2mm (short)

SEVI-1014 - Inconel Exhaust Valve
• Head Diam: 33.00mm (+1.0)
• Stem Diam: 5.96mm
• Length: 104.7mm (std)
*SEVI-1014-HS - As above - Sodium Filled.
*SEVI-1014/2 - Length: 104.20mm (short)

SEVN-1012 - Black Nitrided Exhaust Valve
• Head Diam: 32.50mm (+0.5)
• Stem Diam: 5.96mm
• Length: 104.7mm (std)
* SEVN-1012/2 - As above except - Length: 104.20mm (short)

SEVN-1014/2 - Black Nitrided Exhaust Valve
• Head Diam: 33.00mm (+1.0)
• Stem Diam: 5.96mm
• Length: Length: 104.20mm (-0.5)

Stock images used. Product may vary.