Wiseco RED Series Chevy Small Block 400 4.135in Bore 1.425in CH -21.00 CC Piston Set

If you're rebuilding the heart of your Chevy Small Block 400 for serious performance, like drag racing or circle track, you need pistons that can handle the stress. Wiseco's RED Series pistons are built for exactly that kind of demanding work. They use a Race Engineered Design to give you the strength and precision machining needed to get the most out of your engine.

These pistons are forged in the USA from 2618 aluminum, which is known for its tensile strength, making them a solid choice for high-performance builds and engines with power adders. Wiseco includes horizontal slot oiling in the pin bores to keep the wrist pins and small-end of the connecting rods well-lubricated, which is crucial for keeping things running smoothly over the long haul. The dedicated forgings allow for an engine-specific strutted design, balancing strength with a manageable weight. Plus, the ArmorGlide skirt coating helps reduce friction and noise, while also cutting down on wear in the cylinder walls and on the piston skirts themselves. Each set comes complete with premium rings, so you won't have to hunt for those separately.

An accumulator groove is also part of the design, helping to maintain consistent ring seal and keep power delivery steady. Keep in mind these pistons are not CARB approved and cannot be shipped to California. For a robust piston set designed for performance applications, this Wiseco RED Series set is a well-built option.