Tomei Over Size Valve Set - Mitsubishi Lancer Evo 1-9 4G63 Turbos These M12 x 1

These M12 x 1

it's designed using sophisticated CAD/CAM software

The integrated thermal insulation gasket reduces heat transfer from the intake manifold

The Pro Series Exhaust Cam Gear for Honda's K20/ K24 engines enables serious tuners to optimize horsepower and torque by being able to further adjust camshaft timing

Tomei Over Size Valve Set - Mitsubishi Lancer Evo 1-9 4G63 Turbos These M12 x 1Tuned engines require as much fuel mixture to enter the combustion chamber as possible. So a larger diameter design was selected to optimize flow rates. Due to the extremely high temperature conditions experienced, Intake, the combustion chamber during high power runs the durability of the valves were also addressed to improve resistance to high heat conditions. The TOMEI oversized valves were designed with the above factors and more so with the