JE Pistons 400 SBC .175 DOME Set of 8 Pistons

This is a set of eight forged pistons from JE Pistons, designed for a 400 SBC engine with a 4.165 inch bore. You get the pistons themselves, ready for installation into your performance build. These aren't just any pistons; they're forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for engines pushed hard in racing or high-performance street applications.

JE Pistons has been in the forged piston game for over 75 years, and they build these right here in the USA. They use a proprietary Forged Side Relief (FSR) design, which means the skirt is narrower and the wrist pin is shorter. This setup helps cut down on friction and power loss, while also saving weight. Depending on the specific application, these pistons might also feature an accumulator groove to help manage combustion gas pressure, leading to better ring seal and more consistent power. Some applications also get a skirt coating to further reduce friction and wear, which can also quiet down the engine a bit.

Because these pistons are designed specifically for the 400 SBC engine and its intended use, you can expect optimized performance and durability. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. You'll also want to refer to the manufacturer's installation instructions for details on proper fitment and assembly, as these are performance parts requiring careful installation.