JE Pistons 400SBC 18DEG DOME Set of 8 Pistons

JE Pistons is known for its extensive experience in forged racing pistons, applying over 75 years of knowledge to their wide range of forged pistons for domestic applications. This specific set, the 400SBC 18DEG DOME, is engineered, forged, and machined 100% in the USA. These pistons are designed for specific engine and racing applications, aiming for a balance of durability and performance that has been proven in competition.

Crafted from 2618 aluminum, these pistons offer the high tensile strength necessary for demanding performance applications. They feature a proprietary Forged Side Relief (FSR) forging design, which helps minimize friction and power loss by reducing skirt width and saving weight with a shorter wrist pin. Depending on the specific application, an accumulator groove may be included to reduce pressure from combustion gases, improving ring flutter and enhancing ring seal for consistent power delivery. Additionally, a skirt coating, if included for your application, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

This set includes eight pistons, each with a 4.125-inch bore and a dome volume of 2.50 cc. The wrist pin diameter is 0.927 inches, and the compression distance is 1.125 inches. Please note that this product is not CARB approved and cannot be shipped to California. It is important to consult the manufacturer's installation instructions for proper fitment and assembly procedures.