Manley 03-06 EVO VIII/IX 86.5mm Bore +1.5mm OS 8.5/9.0 CR Dish (Extreme Duty) Pistons W/Rings - 4

Manley Performance is well-known for building strong engine components that professional builders trust. If you're working on an 03-06 Mitsubishi Lancer Evolution VIII or IX and need a robust piston set, these Extreme Duty pistons are a solid choice. They are designed to handle the demands of a performance engine build, featuring an 86.5mm bore and a +1.5mm oversize specification, with a dish that supports an 8.5:1 or 9.0:1 compression ratio.

These pistons are forged from domestic 2618 alloy, a material 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 considerate of your cylinder walls during operation. The ring lands and grooves are machined to exacting standards, which is crucial for achieving a good seal and maximizing the power output from your engine. Additionally, Manley's unique fixturing process allows them to machine the skirt and ring grooves in one operation, ensuring they are perfectly square to each other for optimal performance.

This set includes the pistons, rings, and premium chrome moly wrist pins. For those seeking even greater durability, Manley offers upgrades to 9310 or Turbo Tuff/DLC alloy wrist pins on select part numbers. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.