Wiseco Chrysler HEMI 426 4.250in Bore 1.765 Compression Height +80cc Dome Top Pistons

If you're rebuilding a legendary Chrysler 426 Hemi engine for serious racing or heavy-duty performance, these Wiseco Professional Series pistons are built to handle the extreme demands. They're designed from the ground up to provide the strength and durability needed for severe duty applications, ensuring your Hemi can perform at its limit without compromise.

Crafted in the USA from 2618 aluminum, these pistons offer improved tensile strength, which is crucial for withstanding the high pressures and temperatures found in race engines. Wiseco machines them with precision ring grooves, anti-detonation grooves, and extra features for improved ring seal, all contributing to better combustion efficiency and reliability. The crown is fully machined for accuracy, and they come with forced pin oiling to keep the wrist pins properly lubricated under stress. Plus, the ArmorGlide skirt coating helps reduce friction, resist seizure, and operate more quietly, even in harsh conditions.

This set includes eight pistons, each with a 4.250-inch bore, a 1.765-inch compression height, and an 80cc dome volume. They are designed to work with a 1.031-inch pin diameter. Keep in mind these are intended for racing applications and are not CARB approved, so they cannot be shipped to California.