CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (86.5mm) - Size (+0.5mm) - CR (10.0) Single

CP Pistons is well-known for making strong, reliable engine components for performance applications. This forged piston and ring set is built for the Mitsubishi 4B11 engine found in the Evo X. It's designed to handle the demands of a performance engine build, offering a solid upgrade over stock components.

This set features pistons with a bore of 86.5mm and a +0.5mm size, meaning they are 0.5mm larger than the standard bore size. This is often done during an engine rebuild or when increasing displacement. The compression ratio is set at 10.0:1, which is a common and versatile ratio for many performance builds. Forged pistons are chosen for their strength and ability to withstand higher cylinder pressures and temperatures compared to cast pistons.

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.