JE Pistons LS ASYM FT 4.000STRK Set of 8 Pistons

If you're building a high-performance LS engine, these JE Pistons ASYM FT 4.000STRK forged pistons are a solid choice. JE Pistons has been making top-tier forged pistons for over 75 years, and this set is built specifically for LS applications to give you the best combination of strength and performance. They're forged and machined right here in the USA, using 2618 aluminum, which is known for its high tensile strength, making it ideal for engines that are pushed hard.

What sets these pistons apart is their design. They feature JE's proprietary Forged Side Relief (FSR) forging, which helps reduce friction and power loss by using a narrower skirt and a shorter wrist pin, saving weight too. Depending on the specific application, you might also find an accumulator groove, which helps control combustion gas pressure, reducing ring flutter and improving the seal for consistent power. Some applications also include a skirt coating that further cuts down on friction and wear on the cylinder walls, while also making the engine run a bit quieter. These are flat-top pistons with a 4.010-inch bore and a -5.00 cc dish, designed to optimize performance and durability for your specific engine build.

This set includes eight pistons, enough for a full V8 engine. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.