JE Pistons SBC 400 FSR DOME Set of 8 Pistons

If you're rebuilding a high-performance Small Block Chevy 400 engine, a solid set of pistons is where you start. These JE Pistons are forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines that see a lot of demand. They're designed specifically for the SBC 400, meaning they're built to optimize performance and durability for that particular engine.

JE Pistons uses a proprietary Forged Side Relief (FSR) design. This means the skirt is narrower and the wrist pin is shorter, which helps reduce friction and power loss while also saving weight. Some applications, like this one, also include an accumulator groove. This feature helps manage combustion gas pressure, which can reduce ring flutter and improve the seal for more consistent power delivery. If your application includes a skirt coating, it further reduces friction and wear on the piston skirts and cylinder walls, and it can even help quiet down engine noise. Everything is forged and machined right here in the USA, ensuring you're getting a well-built part with a long history of proven performance on the track.

This set includes eight pistons, each with a 4.125-inch bore and a dome shape that displaces 10.8cc. The wrist pin is 0.927 inches in diameter. Keep in mind these pistons are not CARB approved and cannot be shipped to California. They are also subject to California's Prop 65 warning.