Supertech Mitsubishi 4G63 Gen 2 86mm 15cc Dish 8.3:1/8.8:1 CR Piston - Set of 4 (Excl Rings)

Supertech Mitsubishi 4G63 Gen 2 forged piston set. This set is designed for the 4G63 engine, featuring an 86mm bore and a 15cc dish that results in a compression ratio of 8.3:1 or 8.8:1, depending on your cylinder head volume. These pistons are a solid choice for rebuilding or upgrading your engine, especially if you're looking to handle increased boost or higher performance demands.

Crafted from high-strength forged aluminum, these pistons are built to withstand the rigors of performance applications. The 15cc dish is a specific design feature that helps achieve the stated compression ratios, making them suitable for naturally aspirated builds or forced induction setups where controlled compression is key. This set includes four pistons, but please note that piston rings are sold separately, so be sure to order those to complete your engine build. The 86mm bore size is a common specification for many 4G63 engine builds, offering a good balance between displacement increase and cylinder wall strength.

When undertaking an engine rebuild with these pistons, it's important to ensure all supporting components are up to the task. Proper balancing of the rotating assembly, correct ring gap setting, and precise cylinder wall honing are crucial for optimal performance and longevity. Always refer to the manufacturer's detailed installation instructions for specific clearances and procedures to ensure a successful build.