CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (87mm) - Size (+1mm) - CR (10.0) Set of 4

Forged from high-strength 2618 aluminum alloy, these CP Pistons are built to handle the demands of a performance Mitsubishi 4B11 Evo X engine. The 87mm bore size, combined with a +1mm over specification, is designed for engines that have been bored out to accommodate larger pistons, often during a rebuild or performance enhancement. This specific set is engineered for a 10.0:1 compression ratio, a common target for balanced power and reliability in modified applications.

CP Pistons are known for their robust construction and precision machining. Each piston in this set of four features a skirt design optimized for reduced friction and noise, contributing to a smoother running engine. The included rings are also selected to complement the piston's performance characteristics, ensuring a proper seal for optimal power delivery and oil control. This set is a solid choice for builders looking to upgrade their engine's internal components with well-built, reliable parts.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and lubrication procedures. This set is intended for performance builds where the engine's original specifications are being modified. Please note that this product is not CARB approved and cannot be shipped to California.