Building or rebuilding a Small Block Chevy? You'll need some serious pistons. This Icon IC9913.040 set is made of forged aluminum, which is way stronger than cast pistons – perfect for high-performance or turbo builds where things get hot and stressful. They have a flat top design, which works great for achieving a specific compression ratio. It's a complete set ready for your engine machinist to install. The package is about 18 x 9 x 4 inches and weighs over 12 pounds, so you know you're getting substantial, quality parts. A key upgrade for any serious Chevy V8 project.