Manley Mitsubishi 4G63/4G63T EVO VIII/IX 85.5mm Bore 10.0:1 Comp Flat Top Pistons w/Rings (ED)

Manley Performance is well-known for building robust engine components, and their Platinum Series pistons are a prime example of that commitment. If you're rebuilding a Mitsubishi 4G63 or 4G63T engine for an EVO VIII or IX, these 85.5mm bore pistons are designed to handle the demands of a performance build. They feature a flat top design with a 10.0:1 compression ratio, making them a solid choice for many engine configurations.

These pistons are forged from domestic 2618 alloy, which is chosen for its superior strength and ability to perform under high stress. Manley uses proven cam and barrel skirt profiles that help generate power efficiently while also being gentle on your cylinder walls, which is crucial for engine longevity. The ring lands and grooves are machined to exacting standards to ensure a better ring seal, leading to improved power output. For added durability, they come standard with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt.

When building a high-performance engine, the details matter. These pistons are a popular choice among professional engine builders and tuners who rely on Manley for dependable performance. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete build, ensure you have all necessary supporting components and refer to manufacturer instructions for proper installation.