Wiseco Chevrolet LS RED- LS 4.000in Stroke Flat Tops 4.010in Bore - Set of 8

When you're building a high-performance Chevrolet LS engine, whether for drag racing, circle track, or serious street duty, the pistons are a critical component. These Wiseco RED series pistons are built to handle the demands of boosted or naturally aspirated performance applications. They are forged from 2618 aluminum, a material chosen for its high tensile strength, which is essential for engines that will see high RPMs and significant power output.

Wiseco's Race Engineered Design (RED) process means these pistons aren't just generic blanks; they're shaped specifically for LS engines to maximize strength while keeping weight down. You'll find features like horizontal slot oiling in the pin bores to ensure the wrist pins stay well-lubricated, which is key for longevity in a hard-working engine. The accumulator groove helps the top ring maintain consistent pressure against the cylinder wall, aiding in a solid seal and consistent power delivery. Plus, each set comes with premium rings, so you don't have to hunt for compatible ones.

To further reduce friction and wear, these pistons feature an ArmorGlide skirt coating. This not only helps the piston move more smoothly within the cylinder but also cuts down on noise. Because these are dedicated forgings, they are optimized for the specific strutted design needed to achieve that ideal strength-to-weight ratio. This set is designed for a 4.000-inch stroke and a 4.010-inch bore, with a 1.105-inch compression height and a 0.927-inch pin diameter.