JE Pistons LS ASYM DM 4000STRKR Set of 8 Pistons

JE Pistons has been a leader in forged racing pistons for over 75 years, and they've put that experience into their domestic engine components. This set of LS ASYM DM 4000STRKR pistons is engineered specifically for LS engines, offering a blend of durability and performance that's proven on the track. Each piston is forged and machined right here in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for high-demand performance applications.

These pistons feature JE Pistons' proprietary Forged Side Relief (FSR) design. This means they have 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, you might also find an accumulator groove, designed to reduce pressure from combustion gases. This helps prevent ring flutter and improves ring seal, leading to more consistent power delivery. Some applications also include a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, which can also help lower operating noise.

This set includes eight pistons, each with a 4.135-inch bore and a 0.927-inch pin diameter. They are designed for dome applications and have a specific volume of 0.90 cc. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For serious LS engine builds where durability and performance are paramount, these JE Pistons are a solid choice.