JE Pistons Chevrolet LS Gen III/IV 4.155in Bore 1.115in CH -13.40 CC Inverted Piston Kit - Set of 8

Forged from 2618 aluminum, these JE Pistons are built for serious performance in Chevrolet LS Gen III and IV engines. The 4.155-inch bore size and -13.40cc inverted dome dish are key specs for engines looking to handle significant power increases, whether for racing or high-performance street use. JE Pistons has been making forged pistons for over 75 years, and this kit is a testament to that experience, designed specifically for the demands of these popular V8s.

What sets these pistons apart is JE's proprietary Forged Side Relief (FSR) design. This involves a reduced skirt width and a shorter wrist pin, which helps minimize friction and power loss while also saving weight. Depending on the specific application, these pistons may also feature an accumulator groove to help reduce combustion gas pressure, leading to better ring seal and more consistent power. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation and longer life. Every part of this kit is made in the USA, ensuring you're getting a well-built component ready for high-demand applications.

This set includes eight pistons, designed to fit your LS Gen III/IV engine with a 4.155-inch bore and a 1.115-inch compression height. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For builders aiming for maximum durability and performance in their LS engine, this JE Pistons kit is a solid option.