Subaru EJ20/EJ25 Turbo DOHC Sodium Filled Exhaust Valves by Supertech
Supertech sodium filled valves made of Inconel/Nimonic alloy offer a significant reduction in valve head temperatures that are required for today’s modern turbo engines.
A cooler valve improves the material strength and durability while allowing the tuner more flexibility and a wider range of spark timing advances. Combine that with an average weight reduction of 10% and there isn’t a cooler valve on the market
Features
- Head Diam: 33.00mm(+1.0)
- Material: Inconel-Nimonic / Sodium Filled
- Groove Type: Single Groove
- Length: 104.7mm(std)
- Stem Diam: 5.95mm
- Back-cut angle
- Undercut stem
- One piece forged valve (non-magnetic)
- Magnetic friction welded wafer, Hardened to 52 HRC min
- “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve
Benefits
- Reduced valve head temperature
- Allows the tuner more flexibility and a wider range of spark timing advances
- Improved material strength and durability
Applications
- 2006-2014 Subaru WRX
- 2004-Present Subaru WRX STI
- 1998-2011 Subaru Impreza
- 1996-2010 Subaru Legacy
- 1996-2012 Subaru Legacy GT
- 1996-2012 Subaru Outback
- 1998-2010 Subaru Forester
- 1998-2013 Subaru Forester XT
What’s In The Box?
- 8 – Exhaust Valve
Warranty
- Due to the nature of the application, these parts are sold without any express warranty or any implied warranty of merchantability, or fitness for a particular purpose.
