Brian Crower Exhaust Valve Sets for Mitsubishi 4G63 Eclipse/Evo 30.5mm

Brian Crower Exhaust Valve Sets for Mitsubishi 4G63 (Eclipse/Evo) — 30.5mm Precision-engineered exhaust valves from Brian Crower designed specifically for Mitsubishi 4G63 engines used in Eclipse and Evo models. These 30.5mm valves deliver reliable flow, durability, and improved thermal performance for street, race, and high-performance builds. Fitment: Direct replacement for Mitsubishi 4G63 (Eclipse, Evolution) cylinder heads. Size: 30.5mm exhaust head diameter for increased flow without sacrificing sealing. Material & Construction: High-strength alloy steel with precision heat treatment for superior fatigue resistance and valve seat life. Performance Benefits: Better exhaust scavenging, reduced backpressure, improved throttle response and torque in mid-to-high RPM ranges. Reliability: Tight manufacturing tolerances for consistent seating, reduced leakage, and longer service intervals. Ideal for enthusiasts upgrading camshafts, turbo systems, or building a durable race engine. Backed by Brian Crower’s reputation for motorsport-grade valvetrain components. Upgrade your 4G63 exhaust flow with Brian Crower — engineered for performance and longevity.