Wiseco Chevrolet LS -4cc Flat Top 1.294 X 4.000 - Set of 8

What you get in this box are eight Wiseco RED Series forged pistons, designed specifically for Chevrolet LS engines. These aren't just any pistons; they're built with Race Engineered Design (RED) principles, meaning they're crafted for the kind of strength and durability that performance engines demand, especially those running power adders like turbos or superchargers. The -4cc flat top design with a 4.000-inch bore and 1.294-inch compression height is a key part of their setup for many LS builds.

Wiseco makes these pistons from 2618 aluminum right here in the USA, chosen for its high tensile strength needed to withstand the pressures of racing. They feature horizontal slot oiling in the pin bores, which is a smart detail that keeps the wrist pins and the connecting rod's small end well-lubricated, crucial for making sure they last. The pistons themselves have a dedicated forging that allows for an optimized, engine-specific strutted design, balancing strength with a lower weight. Plus, they come with an ArmorGlide skirt coating that helps cut down on friction and noise while also reducing wear on the piston skirts and cylinder walls. You also get premium rings included with each set, so you won't have to hunt for those separately. An accumulator groove is also built in to help maintain consistent ring seal and power delivery.

Because these pistons are designed for high-performance applications, they are not CARB approved and cannot be shipped to California. If you're building a serious LS engine for drag racing, circle track, or any other demanding use, these pistons are a solid choice for the core of your build.