Toyota 4U-GSE/Subar FA20 Black Nitride Intake Valves by Supertech
Supertech intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. This is the highest grade of steel available and provides the strength to withstand just about any application.
Features
- Head Diam: 35.00(std)
- Material: Stainless Steel 21-4N
- Groove Type: Single Groove
- Length: 105.00mm
- Stem Diam: 5.46mm
- Back-cut angle
- Undercut stem
- One piece forged valve (non-magnetic)
- Magnetic friction welded wafer, Hardened to 52 HRC min
- Black Nitride for superior hardness keeping core ductility
- “Superfinish” valve stem with a surface roughness of about 1/3 of a regular valve
Benefits
- Less Friction
- Better Flow Rates
- Better Sealing
- Improves durability and reduces carbon build up
Applications
- 2014-2018 Subaru Forester XT
- 2015-2021 Subaru WRX
- 2012-2020 Subaru BRZ
- 2012-2020 Toyota 86
- 2013-2016 Scion FR-S
What’s In The Box?
- 8 – Intake 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.