CP Piston & Ring Set for Mitsubishi 4G63 2G/Evo 8/9 -Bore 86mm +1mm - Stroke 94 -CR 9.0 -156mm Rod

CP Pistons is well-known for building strong, reliable internal engine components for high-performance applications. This forged piston and ring set is specifically made for the Mitsubishi 4G63 engine, commonly found in the 2nd generation DSM cars and the Evolution 8 and 9 models. If you're rebuilding the top end of your 4G63, especially for boosted setups, these pistons are a solid choice to handle the extra stress.

These pistons are forged from high-strength aluminum, which makes them much more durable and resistant to detonation than cast pistons. This particular set features an 86mm bore, which is 1mm over the stock size, and is designed to work with a 94mm stroke and a 156mm connecting rod. The compression ratio comes in at 9.0:1, making it suitable for builds that will see significant boost pressure. The included rings are designed to seal well and help maintain consistent compression under demanding conditions.

When installing these, remember that they are an overbore size, so your engine block will need to be machined to the correct 86mm dimension. Proper balancing of the rotating assembly is also crucial for longevity. This set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for specific details regarding assembly and break-in procedures.