JE Pistons LS ASYM FT 4.000STRK Set of 8 Pistons

Forged from 2618 aluminum, these JE Pistons are built for high-tensile strength, making them a solid choice for performance LS engine builds. They feature a proprietary Forged Side Relief (FSR) design that helps reduce friction and power loss by using a narrower skirt width and a shorter wrist pin, which also saves weight. This specific set is designed for a 4.000-inch bore with a flat-top piston and a -5.00 cc dish, intended for 8-cylinder applications.

JE Pistons brings over 75 years of experience to their forged piston sets, with this particular set being engineered, forged, and machined entirely in the USA. The FSR design isn't just about saving weight; it's about optimizing the piston's interaction with the cylinder wall to minimize wear and maximize efficiency. Depending on the specific application, these pistons may also include an accumulator groove to help manage combustion gas pressure, reducing ring flutter and improving ring seal for consistent power delivery. Some applications also benefit from a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

When you're building a high-demand performance engine, the details matter. These pistons are designed specifically for the LS engine and its intended use, aiming for the best combination of durability and performance. While they are not CARB approved and cannot be shipped to California, they represent a proven choice for those looking to equip their engine with top-tier forged pistons.