JE Pistons LS ASYM DOME Set of 8 Pistons

Starting with a 2618 aluminum forging, these JE Pistons are built for serious performance in LS engines. This material offers the high tensile strength needed for demanding applications, ensuring these pistons can handle the stress of high-horsepower builds. JE Pistons has been making forged racing pistons for over 75 years, and they engineer and machine these right here in the USA, specifically for each engine and racing use. That means you're getting a part optimized for both durability and performance, not a generic fit.

You'll find a few notable features designed to get the most out of your engine. The proprietary Forged Side Relief (FSR) design uses a reduced skirt width and a shorter wrist pin to cut down on friction and save weight, which can translate to a little more power. Depending on the specific application, you might also find an accumulator groove, which helps manage combustion gas pressure to prevent ring flutter and keep your rings sealing consistently. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also helping to quiet down the engine operation.

This set includes eight pistons, each with a 4.010-inch bore, a 1.304-inch compression distance, and a 0.927-inch pin. It's important to note that these pistons are not CARB approved and cannot be shipped to California. If you're building a high-performance LS engine, these pistons are a solid option backed by decades of racing experience.