Manley 03-06 Mitsubishi Evo 8/9 4G63T 86.5mm +1.5mm -8cc Dome 94mm Stroke Pistons w/ Rings

Manley's 2618 alloy forgings are the backbone of these pistons, offering a well-built foundation for serious engine builds. Specifically designed for the 03-06 Mitsubishi Evo 8 and 9 models with the 4G63T engine, these pistons feature an 86.5mm bore and a -8cc dome, intended for a 94mm stroke crankshaft. This combination is a common setup for those looking to increase displacement and compression for improved performance.

The attention to detail goes further with Manley's signature cam and barrel skirt profiles. These aren't just for looks; they help the piston move smoothly within the cylinder, reducing wear on the cylinder walls while still allowing the engine to make substantial power. The ring lands and grooves are machined to exacting standards, which is crucial for achieving a solid seal with the piston rings. This improved seal means better combustion efficiency and more power getting to the wheels. The pistons also come with premium chrome moly wrist pins, known for their durability.

Manley's unique fixturing process allows them to machine the skirt and ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which is vital for consistent ring seal under high loads. These pistons are a popular choice among professional engine builders and tuners who demand reliability and performance from their builds. Please note that these pistons are not CARB approved and cannot be shipped to California.