JE Pistons BBC .675 DOME Set of 8 Pistons

These JE Pistons BBC pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, making them well-suited for high-demand performance applications. Each piston in this set of eight features a .675-inch dome and is designed with a 4.320-inch bore, a 1.645-inch compression distance, and a 0.990-inch wrist pin. The dome shape is specifically engineered to work with your cylinder head volume for optimized combustion. JE Pistons has over 75 years of experience in creating forged racing pistons, and these are no exception, being forged and machined entirely in the USA.

JE Pistons incorporates a proprietary Forged Side Relief (FSR) forging design. This design helps minimize friction and power loss by using a reduced skirt width and a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons may also include an accumulator groove. This groove is designed to reduce pressure from combustion gases, which helps prevent ring flutter and improves the ring seal for more consistent power delivery. Additionally, some applications may feature a skirt coating that further reduces friction and wear on the piston skirts and cylinder walls, while also contributing to quieter operation.

This set is designed specifically for BBC (Big Block Chevrolet) engines and the intended use application, aiming for an optimal balance of performance and durability. It's important to note that this part is not CARB approved and cannot be shipped to California. If you're building a high-performance engine where reliability and power are critical, these pistons are a solid choice backed by extensive manufacturing experience.