Wiseco Chevy SBC 21-23 Deg 1.250inCH x 4.030in -5cc Volume Lateral Gas Ports Piston Kit

These Wiseco Professional Series pistons start with a 2618 aluminum forging, chosen for its improved tensile strength, which is critical when you're pushing your Small Block Chevy hard. The -5cc dish volume and 21-23 degree valve angle are specific design choices aimed at optimizing combustion chamber shape for certain performance builds. You'll find precision ring grooves, an anti-detonation groove, and additional features designed to improve ring seal, all contributing to better performance and durability under demanding conditions.

Wiseco also includes an ArmorGlide skirt coating on these pistons. This isn't just for looks; it helps resist seizure, reduces friction between the piston and cylinder wall, and contributes to quieter operation. The crown is fully machined for a clean, consistent surface, and the forced pin oiling design ensures the wrist pin gets the lubrication it needs, especially important in high-stress race applications. These are built to handle heavy to severe duty performance builds, meaning they're made to take a beating and keep performing.

This kit includes a set of eight pistons, ready for your next engine build. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper assembly and break-in procedures.