Brian Crower Valve Springs for Mitsubishi 4G63 Eclipse/Evo/Dodge SRT-4 Single

Brian Crower Valve Springs for Mitsubishi 4G63 (Eclipse / Evo) and Dodge SRT-4 — single spring configuration engineered for high-performance and reliable valvetrain control. Key Features Precision Engineered: Manufactured by Brian Crower to OEM tolerances with performance-focused spring rates. High RPM Stability: Reduces valve float and maintains consistent control at elevated engine speeds. Durable Construction: High-strength alloy steel with heat treatment for extended fatigue life. Direct Fit: Designed for Mitsubishi 4G63 engines used in Eclipse and Evo models and compatible with Dodge SRT-4 applications. Single Spring Design: Ideal for stock or mildly upgraded heads where coil bind clearance and valve weight are within spec. Benefits Improve throttle response, tighten valvetrain control, and support aggressive cam profiles or boost levels without sacrificing everyday drivability. Brian Crower valve springs offer a dependable upgrade for street, track, and race builds. Note: Verify valve spring seat pressure, installed height, and compatibility with your specific camshaft and retainers before installation. Professional installation recommended.