CP Piston & Ring Set for Mitsubishi 4G63 2G - Bore (86mm) - Size (+1.0mm) - Stroke (88) - CR (10.0)

What you get in this box is a complete set of forged pistons and matching rings designed specifically for the Mitsubishi 4G63 2G engine. This kit is built for a 1.0mm oversize bore, meaning it's intended for engines that have already been bored out to 86mm, and it's set up for an 88mm stroke with a 10.0:1 compression ratio. These aren't your everyday cast pistons; they're forged from high-strength aluminum alloy, which makes them significantly more durable and resistant to the extreme pressures and heat found in performance or heavily modified engines. This level of construction is crucial for anyone pushing their 4G63 beyond stock specifications, whether for racing, rallying, or just a serious street build.

The forged process aligns the aluminum's grain structure to withstand higher loads without deforming or fracturing. This means you can expect improved reliability under demanding conditions. The included rings are also selected to work perfectly with these pistons, ensuring a good seal in the cylinder for optimal compression and oil control. When you're rebuilding the top end of a 4G63, especially if you're aiming for more power or need to replace worn components in an already bored block, a set like this offers a solid foundation. It's a critical step in ensuring your engine can handle the increased stress and deliver consistent performance.

Keep in mind that this piston set is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures, especially when dealing with oversized components and performance engine builds.