JE Pistons LS ASYM FT 4.000STRK Set of 8 Pistons

JE Pistons is known for making well-built forged racing pistons, bringing over 75 years of experience to domestic engine applications. This set of LS ASYM FT pistons is a prime example of their commitment to performance and durability. They are engineered, forged, and machined entirely in the USA, designed specifically for your engine and its intended use to give you the best combination of strength and performance. You'll find JE Pistons proving their worth in competition time and time again.

This set features JE Pistons' proprietary Forged Side Relief (FSR) forging design. This design helps minimize friction and power loss by using a reduced skirt width, and it also saves weight thanks to a shorter wrist pin. Depending on the specific application, these pistons may also include an accumulator groove, which helps manage combustion gas pressure. This can reduce ring flutter and improve ring seal, leading to more consistent power output. Additionally, a skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, while also cutting down on operating noise. These pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for high-demand performance applications.

This particular set is designed for an 8-cylinder engine with a 4.030-inch bore. It includes pistons with a flat top (-5.00 cc dish volume) and uses a 0.927-inch wrist pin. Please note that this part is not CARB approved and cannot be shipped to California. It's important to check the manufacturer's installation instructions for specific details regarding assembly and break-in procedures to ensure optimal performance and longevity.