Wiseco RED Series Chevy Small Block 400 4.185in Bore 1.425in CH -21.00 CC Piston Set

Wiseco is well-known for its high-performance forged pistons, and their RED Series takes that reputation a step further. These pistons are built using Race Engineered Design (RED) principles, meaning they're forged and machined right here in the USA from strong 2618 aluminum. This material choice is crucial for the tensile strength needed in demanding performance racing and power adder applications, ensuring they can handle the stress of high-output engines.

What sets these pistons apart is their precision-machined features, designed to give you a competitive edge. You'll find horizontal slot oiling in the pin bores, which is key to keeping the wrist pin and small-end of the connecting rod properly lubricated. This dedicated lubrication is critical for a long service life, especially under heavy load. The pistons also feature a dedicated forging design, allowing for an optimized, engine-specific strutted construction. This approach maximizes the strength-to-weight ratio, meaning you get robust performance without unnecessary mass. To further reduce friction and wear, an ArmorGlide skirt coating is applied, which also helps quiet down operation. Each set comes complete with premium rings, so you don't need to source those separately. An accumulator groove is also included to help maintain consistent ring seal and power delivery.

This set is specifically designed for the Chevrolet Small Block 400 engine, with a 4.185-inch bore, a 1.425-inch compression height, and a -21.00cc dish volume. Please note that these pistons are not CARB approved and cannot be shipped to California.