Wiseco Chevy Small Block 4.040in Bore 1.250in CH -5.00 CC Piston Set

If you're rebuilding a high-performance Chevrolet Small Block engine for serious racing, these Wiseco Professional Series pistons are built to handle the stress. They're designed for applications that demand heavy to severe duty performance, meaning they can take a beating and keep going when you push your engine to its limits.

These pistons are forged and machined in the USA from 2618 aluminum, which gives them improved tensile strength for durability under extreme conditions. You'll find precision ring grooves, anti-detonation grooves, and other features that help improve ring seal for better combustion efficiency. They also come with an ArmorGlide skirt coating that helps reduce friction, resist seizure, and operate more quietly. The fully machined crown ensures accuracy, and forced pin oiling helps keep the wrist pins lubricated under high loads.

This set includes eight pistons, each designed for a 4.040-inch bore with a 1.250-inch compression height and a 0.927-inch pin diameter. Keep in mind these are not CARB approved and cannot be shipped to California. For a robust rebuild that can withstand demanding race conditions, these Wiseco pistons are a solid choice.