CP Piston & Ring Set for 4G63 2G-Bore (85.5rmm)-Size (+0.5)-CR (8.5 Eclipse / 9.0 Evo 8/9)

Forged from 2618-T61 aluminum, this CP Pistons SC7229-4 piston and ring set is built for high-performance 4G63 engines. The 85.5mm bore size is a +0.5mm oversize, ideal for rebuilding or upgrading engines where a slight increase in displacement is desired. This set offers two distinct compression ratios: 8.5:1, which is well-suited for naturally aspirated or mildly boosted Eclipse builds, and 9.0:1, a popular choice for more aggressive turbocharged Evo 8 and 9 applications. The 2618-T61 aluminum alloy is chosen for its strength and ability to withstand the extreme temperatures and pressures found in performance engines, offering a solid foundation for your build.

CP Pistons is known for producing well-built internal engine components, and this set is no exception. Each piston is precision-machined to exacting tolerances, ensuring a proper fit and optimal performance within the cylinder bore. The included rings are designed to work seamlessly with the pistons, helping to create a tight seal for efficient combustion and reduced oil consumption. This set is intended for builders who are looking to maximize the potential of their 4G63 engine, whether for track use, spirited driving, or a robust street build. It's important to note that this part is not CARB approved and cannot be shipped to California.

When undertaking a performance engine build, attention to detail is key. This piston set is a critical component for achieving your power goals. Ensure you have all necessary supporting components, such as bearings, gaskets, and a proper balancing procedure, to complete your engine assembly. Always refer to the manufacturer's installation instructions for specific details regarding assembly and break-in procedures.