Manley 03-06 Mitsubishi Evo 8/9 4G63T 87mm +2.0mm Bore 8.5/9.0:1 Dish Pistons w/ Rings

If you're rebuilding the engine in your 2003-2006 Mitsubishi Lancer Evolution 8 or 9, or another compatible 4G63T-powered vehicle, these Manley 87mm forged pistons are a solid choice. They're designed to handle the demands of a performance build, offering improved strength and reliability over stock cast pistons. This set is specifically for the 4G63T engine, featuring a dish design that results in a compression ratio of 8.5:1 or 9.0:1, depending on your cylinder head volume. This makes them well-suited for boosted applications where you need to manage cylinder pressures.

Manley uses their signature 2618 alloy forgings for these pistons, which are known for being strong and durable, especially under high heat and stress. They come with premium chrome moly wrist pins and have precisely machined ring lands and grooves to ensure a good seal with the included piston rings. The cam and barrel skirt profiles are carefully shaped to help the piston move smoothly in the cylinder, reducing wear on the cylinder walls while still allowing the engine to make good power. Manley's unique manufacturing process ensures the ring grooves are perfectly square to the piston skirt, which is critical for proper ring function and sealing.

This set includes everything you need to get started with the pistons themselves, including the rings and wrist pins. They are designed as a direct fit for the specified Mitsubishi and DSM models, making installation more straightforward. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures.