CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (90.0mm) - Size (+4.0mm) - CR (9.0) - Set of 4

If you're rebuilding the heart of your Mitsubishi 4B11 Evo X for serious performance, a strong set of pistons is where you start. This set from CP Pistons is built to handle the demands of a high-output engine, giving you the foundation for more power and reliability. These aren't just replacements; they're an upgrade designed for engines that push the limits.

CP Pistons are well-known in the performance world for their robust construction. These pistons are forged from high-strength aluminum, a process that makes them incredibly durable and resistant to the extreme pressures and temperatures found in a modified engine. They're precision-machined to a 90.0mm bore, which is 4.0mm larger than stock, meaning they're intended for engines that have already been bored out to accommodate them. The 9.0:1 compression ratio is a solid choice for boosted applications, offering a good balance between power and drivability, especially when paired with appropriate tuning. This set includes everything you need for a complete engine build, with four pistons and their matching rings.

When you're going this deep into an engine build, using quality components is key. These CP Pistons are designed to fit right and perform reliably, but remember that any engine work of this caliber requires careful attention to detail during installation and proper tuning to achieve the best results. Always refer to the manufacturer's installation instructions for specific guidance.