Supertech Inconel exhaust valves, Subaru EJ20 / EJ25 turbo DOHC

Supertech's Inconel exhaust valves for the Subaru EJ20 Turbo DOHC are manufactured from an Inconel-Nimonic nickel superalloy, which provides exceptional high-temperature strength, hardness, and corrosion resistance compared to standard valves.

Each valve is precision-machined to OEM tolerances and undergoes rigorous quality control including dimensional inspection, hardness testing, and surface finish verification.

• Inconel-Nimonic superalloy for extreme-EGT strength
• Precision-ground 5.96mm stem and dished face for sealing
• Swirl-polished underhead for improved exhaust flow
• 32.00mm head diameter (standard), 104.7mm length
• Single-groove lock groove, hardened wafer tip
• One-piece forged, set of 8

Specs and fitment: Inconel exhaust valve. Fits Subaru EJ20 turbo DOHC and EJ25 turbo DOHC.