Wiseco RED Series Chevy Small Block 400 4.125in Bore 1.250in CH -15.00 CC Piston Set

If you're rebuilding a performance Chevrolet Small Block 400 engine, especially for demanding applications 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 work. They use a Race Engineered Design philosophy to give you the strength you need without unnecessary weight.

These pistons are forged and machined in the USA from 2618 aluminum, a material 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 ensure your wrist pins and small-end connecting rod bearings stay well-lubricated, which is crucial for long-term durability. The dedicated forgings allow for an engine-specific strutted design, maximizing strength while keeping weight down. Plus, each set comes with premium rings, so you won't have to source those separately. The ArmorGlide skirt coating helps reduce friction and noise, and also cuts down on wear to the piston skirt and cylinder wall.

An accumulator groove is also incorporated to help maintain consistent ring seal and power delivery. Please note that these pistons are not CARB approved and cannot be shipped to California. They are designed for specific engine builds and are not a direct replacement for stock components without proper machine work.