JE Pistons BBC .570 DOME Set of 8 Pistons

JE Pistons is known for making strong, reliable forged pistons that have proven themselves on the race track for over 75 years. This set of BBC pistons, part number 258277, is built with that same dedication to performance and durability. They're forged and machined entirely in the USA from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines pushed to their limits.

These pistons feature JE's 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 engine application, these pistons may also include an accumulator groove to help manage combustion gas pressure, leading to better ring seal and more consistent power. Some applications also benefit from a skirt coating that further reduces friction and wear on the cylinder walls, helping to quiet down operation and extend the life of the components.

This set is designed specifically for BBC (Big Block Chevrolet) engines with a 4.310-inch bore. The dome shape is designed to work with a .570-inch dome volume, and the kit includes 8 pistons, each with a 0.990-inch pin diameter. Remember, these pistons are not CARB approved and cannot be shipped to California.