Ferrea Mitsubishi 4G63/4G63T 35mm 6.57mm 20 Deg S-Flo +1mm 6000 Series Intake Valve - Set of 8

These Ferrea 6000 Series intake valves feature a 35mm head diameter and a 20-degree S-Flo design, which helps improve airflow into the combustion chamber. The S-Flo profile is a unique shape that guides air more efficiently over the valve head and into the cylinder, especially at higher lift. This set includes eight valves, each with a +1mm oversized stem diameter, intended for performance-oriented 4G63 and 4G63T engines.

Constructed from high-strength steel, these valves are built to withstand the demands of performance applications. The 6.57mm stem diameter is a standard size for many performance builds, and the +1mm oversizing allows for a larger valve seat contact area, potentially improving sealing and flow. Ferrea's 6000 series is known for its well-built construction, making these a solid option for engine rebuilds or upgrades where improved airflow is a goal.

When rebuilding or modifying your 4G63 or 4G63T engine, ensuring your valves can handle the increased cylinder pressures and airflow is crucial. These Ferrea valves are designed to be a direct replacement for stock valves, but it's always recommended to consult your engine builder or service manual for specific installation procedures and compatibility with other engine components.