BLACK DIAMOND O/S INT. VALVE EVO/TWIN CAM `84-04

KPMI Black Diamond O/S Intake Valve – EVO/Twin Cam ’84–’04 Engineered for performance & durability: The KPMI Black Diamond Oversized (O/S) intake valve is a direct-fit upgrade for Mitsubishi 4G63/Evo and Twin Cam engines from 1984–2004. Precision-machined for consistent seating and long service life, this valve improves airflow and throttle response under high-performance conditions. Application: Mitsubishi EVO & Twin Cam engines (1984–2004) Type: Oversized intake (O/S) valve — Black Diamond series Benefits: Enhanced airflow, improved combustion efficiency, better high-RPM performance Construction: High-strength alloy with heat-treated stem and polished face for reduced wear Fitment: Direct replacement for stock valves; ideal for rebuilt heads and performance builds Choose KPMI Black Diamond valves when you need reliable, race-ready components that maintain OEM fitment while delivering measurable gains. Perfect for street performance, track use, and engine rebuilds seeking upgraded intake flow and durability.