JE Pistons LS ASYM DOME Set of 8 Pistons

Starting with the 2618 aluminum construction, these JE Pistons are built for serious performance. This material offers the high tensile strength needed when you're pushing an engine hard, whether that's on the track or just in a demanding street application. JE Pistons has been making forged racing pistons for over 75 years, and they engineer these specifically for the LS engine to give you a solid combination of durability and performance.

You'll find a few notable design choices here that make a difference. The proprietary Forged Side Relief (FSR) forging design helps cut down on friction and power loss by using a reduced skirt width, and it also saves weight with a shorter wrist pin. 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 to further reduce friction and wear on the piston skirts and cylinder walls, which can also help quiet things down a bit.

These pistons are forged and machined 100% in the USA, ensuring they meet strict manufacturing standards. They're designed for a 4.155-inch bore and come with a 0.927-inch pin. Keep in mind that these are not CARB approved and cannot be shipped to California. If you're rebuilding your LS engine for high performance, these pistons are a well-built option backed by decades of racing experience.