CP Piston & Ring Set for Mitsubishi 4G64 Evo 8/9 Head - 87.5mm Bore +1mm Size 88 Stroke Set of 4

CP Pistons is known for making strong, well-built internal engine components, and this forged piston and ring set for the Mitsubishi 4G64 engine is a prime example. If you're rebuilding the top end of your Evo 8 or 9, this set is designed to handle the demands of a performance engine build. These pistons are specifically sized for an 87.5mm bore, which is a +1mm over standard size, and feature an 88mm stroke, giving you a solid foundation for increased displacement and power.

Forged from high-strength aluminum alloy, these pistons are built to withstand higher cylinder pressures and temperatures compared to cast pistons. This makes them a popular choice for builds aiming for more power, whether you're increasing boost or making other modifications. The set includes the pistons and the necessary rings, all engineered to work together for optimal sealing and performance. The 87.5mm bore size is a common upgrade for these engines, allowing for a slight increase in displacement while maintaining good wall strength.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and assembly procedures. Proper ring gap setting and piston-to-wall clearance are critical for engine longevity and performance, especially with a performance set like this. This set is intended for use with a 4G64 engine in an Evo 8 or 9, and it's important to note that this part is not CARB approved and cannot be shipped to California.