CP Piston & Ring Set for Mitsubishi 4G63 2G/Evo 8/9 - Bore (86.0mm)-Size (+1.0mm)-Stroke (100)-Set 4

This is a set of four forged pistons and rings from CP Pistons, specifically made for the Mitsubishi 4G63 engine found in the 2nd generation DSM (Eclipse, Talon, Laser) and the Evolution 8 and 9 models. These pistons are designed for an 86.0mm bore, which is 1.0mm over the standard size, allowing for a larger displacement and potentially improved performance when rebuilding or modifying your engine. The 100mm stroke specification is also noted for compatibility with specific crankshaft applications.

CP Pistons are well-known in the performance engine building community for their robust construction and attention to detail. These pistons are forged from high-strength aluminum alloy, a common choice for performance applications because it offers a good balance of strength and weight. Forging creates a denser, stronger grain structure in the metal compared to casting, making these pistons more resistant to the high pressures and temperatures found in modified or racing engines. The set includes the necessary rings, which are critical for sealing the combustion chamber and controlling oil consumption. This specific set is designed to fit a 1.0mm oversize bore, meaning it's intended for engines that have already been bored out or are being rebuilt to a larger displacement.

When rebuilding an engine with performance goals, especially one like the 4G63 which is popular for modification, choosing the right internal components is crucial. These CP Pistons are a solid option for builders looking for reliable, strong pistons that can handle increased boost pressure or higher RPMs. It's important to note that this part is not CARB approved and cannot be shipped to California. Always consult with your engine builder or refer to the manufacturer's detailed specifications to ensure compatibility with your specific crankshaft, connecting rods, and overall engine build plan.