CP Piston & Ring Set for Mitsubishi 4G63 2G/Evo 8/9 - Bore (85.5mm)-Size (+0.5mm)-Stroke (100)

If you're rebuilding the heart of your Mitsubishi 4G63 engine, especially for a high-performance 2nd Gen DSM or an Evo 8/9, a solid set of pistons is crucial. This CP Pistons set is built for those demanding builds where reliability and power go hand-in-hand. These aren't just replacement parts; they're a foundational upgrade for anyone pushing their 4G63 beyond stock specifications.

CP Pistons are well-known in the performance world for their robust construction. This particular set is forged, meaning the aluminum is shaped under extreme pressure, creating a denser, stronger, and more durable piston than cast alternatives. This strength is essential for handling increased cylinder pressures and temperatures common in modified engines. The pistons are machined to an 85.5mm bore, which is a +0.5mm oversize, perfect for engines that have been bored out during a rebuild to clean up the cylinders or achieve a slightly larger displacement. The 100mm stroke specification is also noted, ensuring compatibility with the intended crankshaft setup.

This set includes the pistons and rings, giving you a significant portion of what you need for your engine's bottom end. Remember that these pistons are not CARB approved and cannot be shipped to California. For any performance engine build, it's always recommended to consult with your engine builder or refer to CP Pistons' specific installation guidelines to ensure proper fitment and break-in procedures.