Wiseco Chevy LS 4.005in Bore 1.165in CH -9.00 CC Piston Set

If you're building a high-performance Chevrolet LS engine for serious racing or severe duty applications, this Wiseco Professional Series piston set is built to handle the stress. These pistons are forged and machined in the USA from 2618 aluminum, a material chosen for its improved tensile strength under extreme conditions. The 4.005-inch bore size is a common specification for many LS engine builds, and the 1.165-inch compression height is designed to work with specific crankshafts and connecting rods to achieve the desired compression ratio.

Wiseco has packed these pistons with features aimed at durability and performance. You'll find precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal and prevent detonation. The crown of each piston is fully machined for accuracy, and they come with forced pin oiling to ensure the wrist pin stays well-lubricated. Additionally, the ArmorGlide skirt coating helps reduce friction, resist seizure, and operate more quietly, which is notable in a racing application where every detail matters.

This set includes eight pistons, enough for a complete V8 engine. They are designed for heavy to severe duty performance builds where reliability under extreme load is critical. 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 fitment and assembly procedures.