Manley 03-06 Evo 8/9 4G63T 86.5mm +1.5mm Over Bore 100mm Stroker 8.5:1 Dish Pistons w/ Rings

Starting with the 2618 alloy forgings, these Manley pistons are built for serious performance in your 4G63T engine. They're designed to handle increased displacement, with an 86.5mm bore size that's 1.5mm over the stock dimension, and a 100mm stroke compatibility. This setup results in a dish volume that achieves an 8.5:1 compression ratio, a popular choice for boosted applications where you need room for boost pressure without sacrificing too much low-end response.

Manley uses proven cam and barrel skirt profiles on these pistons. This design helps them move smoothly within the cylinder walls, reducing friction and wear while still allowing for substantial power gains. The ring lands and grooves are machined to very strict standards, which is crucial for getting a solid seal from your piston rings. A good ring seal means better compression, less blow-by, and ultimately, more power. They even use unique fixturing to ensure the ring groove is perfectly square to the piston skirt, a detail that matters for long-term reliability.

These pistons are a solid option for a wide range of vehicles, including models like the Mitsubishi Lancer, Eclipse, and Eagle Talon from the mid-90s through the mid-2000s. They come complete with premium chrome moly wrist pins and are ready for your build. Just remember, these are not CARB approved and cannot be shipped to California.