Ferrea Valve Spring Kit for Mitsubishi Evo X 4B11T Dual Spring

Ferrea Valve Spring Kit for Mitsubishi Evo X 4B11T — Dual Spring Brand: Ferrea Upgrade valve control and reliability with the Ferrea Dual Spring Kit engineered specifically for the Mitsubishi Evo X 4B11T. Designed for high-performance street and track use, these springs deliver consistent seat pressure, improved valve stability, and reduced float at elevated RPMs. Fitment: Mitsubishi Lancer Evolution X (4B11T) Design: Dual spring configuration for superior damping and durability Performance Benefits: Increased valve control, improved rev ceiling, better throttle response Materials & Build: Precision-manufactured from high-strength spring steel with shot-peened finish for fatigue resistance Use Case: Ideal for tuned engines, turbo applications, and aggressive driving Each kit is QA-tested to meet Ferrea's strict standards for consistency and longevity. Whether you're building a race motor or upgrading for reliability, this kit provides the extra margin needed to protect your valvetrain under demanding conditions. Shop with confidence — OEM-level fitment with performance-grade durability.