Ferrea F6025-1 6000 Series Competition Exhaust Valve for Mitsubishi 4G63/4G63T

The Ferrea F6025-1 is a high-performance 6000 Series Competition exhaust valve designed specifically for Mitsubishi 4G63 and 4G63T engines, commonly found in Eclipse, Lancer Evolution I-IX, and other turbocharged applications. This individual valve features a 30.5mm head diameter, 6.55mm stem diameter, and 109.7mm overall length with a 22-degree flow stock configuration.

Construction and Materials:

• Manufactured using Ferrea's exclusive two-step slow forging process with EV8 stainless steel
• Special heat-treatment and stress-relieving process for enhanced durability
• Hard chrome stem coating for superior wear resistance
• Friction-welded hard tip for extended valve train life
• Swirl-polished head for optimized flow characteristics

Performance Features:

• Engineered for high RPM and high spring pressure environments
• Superior fatigue resistance and tensile strength compared to OEM valves
• Designed for street, drag racing, and rally applications
• Flow improvements optimized for turbocharged Sport Compact engines

The Ferrea 6000 Series represents race-proven technology at a competitive price point, making it an excellent choice for both street performance builds and dedicated race engines. Each valve is precision-manufactured to exacting tolerances for reliable performance in demanding conditions.