Wiseco RED Series Chevy Small Block 400 4.135in Bore 1.125in CH -21.00 CC Piston Set

Wiseco is well-known for making strong, reliable internal engine components for performance applications. This RED Series piston set is built for Chevy Small Block 400 engines, offering the kind of strength and precision you need when you're pushing your engine hard, whether that's on the drag strip or the circle track. These aren't just standard pistons; they're forged from 2618 aluminum, a material chosen for its high tensile strength, which is crucial for handling the demands of racing and boosted applications.

What sets these pistons apart is their Race Engineered Design (RED) philosophy. Each set features dedicated forgings that allow for an optimized, engine-specific strutted design, meaning they're built to maximize strength while keeping weight down. You'll also find horizontal slot oiling in the pin bores, which is a smart detail that keeps the wrist pin and small-end of the connecting rod properly lubricated, helping to ensure a long service life. Plus, the included ArmorGlide skirt coating works to reduce friction and noise, while also minimizing wear on the piston skirt and cylinder wall. An accumulator groove is also part of the design, helping to maintain consistent ring seal and overall power output.

This set comes complete with premium rings, so you won't have to source those separately. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For proper installation and to ensure optimal performance, always refer to the manufacturer's detailed installation instructions.