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Stainless Steel Black Nitride Intake Valves

 
Stainless Steel Black Nitride Intake Valves
Engine
Subaru
    EG33 H6
    • EG33 H6
    • EJ20 Turbo DOHC
    • EJ25 Non Turbo DOHC
    • EJ25 Non Turbo SOHC
    • EJ25 Turbo DOHC
    • EZ30 H6 (1st Gen)
    • EZ30 H6 (2nd Gen)
    • FA20
    • FA20F (DIT)
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    • Set of 12

    Stainless Steel Black Nitride Intake Valves

    Supertech Stainless Steel Black Nitride Intake Valves are engineered for serious performance applications. EV8 / 21-4N stainless steel with Black Nitride surface treatment engineered specifically for intake-side airflow stability and high-RPM valve control.

    Technical Highlights

    • Optimized head profile for improved intake flow characteristics.
    • Precision stem finish for consistent guide clearance.
    • Hardened tips for lash and follower durability.
    • Designed for naturally aspirated and boosted intake applications.