Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 85.5mm +0.5mm Over Bore 9.0:1 Dish Pistons w/ Rings

If you're rebuilding the engine in your 1993-1999 Mitsubishi Eclipse, especially if you're looking to push more power from the 4G63T, a solid set of forged pistons is key. These Manley pistons are built to handle the demands of a performance engine, offering a strong foundation for your build. They feature a dish design with a 9.0:1 compression ratio, making them a good choice for boosted applications where you need to control detonation.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to withstand high temperatures and pressures. The pistons also come with tool steel wrist pins for added durability. You'll find that the cam and barrel skirt profiles are designed to reduce friction and wear on your cylinder walls, while the exacting standards for ring lands and grooves ensure a good seal for better power output. Manley's unique manufacturing process ensures the ring grooves are perfectly square to the skirt, which is critical for proper ring function and sealing.

This set includes the pistons, rings, and chrome moly wrist pins, so you have the core components ready for installation. Remember that these pistons are 85.5mm, which is a +0.5mm overbore from the stock size, so ensure your cylinders are machined to this specification. Please note these are not CARB approved and cannot be shipped to California.