Wiseco Chevy Big Block 4.280in Bore 1.270in CH 45.00 CC Piston Set

Forged from 2618 aluminum, these Wiseco pistons are built for serious performance in Chevy Big Block engines. The 4.280-inch bore size and 1.270-inch compression height are specific dimensions for certain Big Block configurations, and the 45.00 CC volume in the combustion chamber is a key factor in determining your final compression ratio. Wiseco machines these pistons in the USA, ensuring precise tolerances for critical components like the ring grooves, which feature anti-detonation designs and additional sealing enhancements to keep combustion gases in check.

Beyond the core forging, these pistons come with an ArmorGlide skirt coating. This isn't just for looks; it's designed to reduce friction between the piston skirt and cylinder wall, which helps with seizure resistance and can lead to quieter operation. The fully machined crown ensures a clean, consistent surface, and the forced pin oiling system helps keep the wrist pin lubricated under extreme conditions. These are intended for heavy to severe duty race applications where durability and performance are paramount.

This set includes eight pistons, ready for your next engine build. Please note that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a professional mechanic to ensure these pistons are the correct choice for your specific application and to confirm all necessary components for installation.