Wiseco RED Series Chevy Small Block 400 4.185in Bore 1.125in CH -21.00 CC Piston Set

What you get in this box is a complete set of eight Wiseco RED Series pistons, specifically made for Chevrolet Small Block 400 engines with a 4.185-inch bore. These aren't just any pistons; they're built using Wiseco's Race Engineered Design (RED) process, which means they're forged and machined right here in the USA from 2618 aluminum. This material choice is key for the kind of tensile strength you need when you're pushing a performance engine hard, especially with power adders like turbos or superchargers.

Wiseco has put some smart details into these pistons to help them perform and last. You'll find horizontal slot oiling in the pin bores, which is a critical feature for keeping the wrist pin and the small end of the connecting rod properly lubricated, even under high stress. The pistons themselves use dedicated forgings, allowing for an engine-specific strutted design that balances strength with keeping the weight down. Plus, they come with an ArmorGlide skirt coating. This isn't just for looks; it actively reduces friction and noise while also cutting down on wear to the piston skirt and cylinder wall. To top it off, each set includes premium rings, so you won't have to hunt for those separately, and an accumulator groove is included to help maintain consistent ring seal and power output.

These pistons are a solid choice for anyone building a performance Chevy Small Block 400 for demanding applications like drag racing or circle track. Just a heads-up, these are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly details.