Wiseco Chevrolet LS RED- LS 4.000in Stroke Flat Tops 4.125in Bore - Set of 8

If you're building a high-performance Chevrolet LS engine, these Wiseco RED Series pistons are a solid choice. They're designed for the demands of racing, whether that's on the drag strip or the circle track. These are flat-top pistons, intended for a 4.125-inch bore and a 4.000-inch stroke, and they come as a set of eight.

Wiseco makes these pistons from 2618 aluminum, which is known for its tensile strength, making them well-suited for engines that see a lot of stress or use power adders like superchargers or turbos. They feature a dedicated forging process that allows for an optimized, strutted design, balancing strength with a manageable weight. You'll also find horizontal slot oiling in the pin bores, which is crucial for keeping the wrist pins and the small end of the connecting rods properly lubricated, contributing to a longer service life. Plus, each set includes premium rings, so you won't have to hunt for compatible ones separately.

To help reduce friction and noise, these pistons have an ArmorGlide skirt coating. This coating also helps minimize wear on the piston skirts and the cylinder walls. An accumulator groove is included to help maintain consistent ring seal, which is important for keeping power levels steady. Keep in mind that these pistons are not CARB approved and cannot be shipped to California.