Wiseco 93-01 Honda B16A Civic Si 81MM Piston Shelf Stock Kit (Must Use .040+ Gasket)

Wiseco is well-known for making strong internal engine components, especially for performance applications. This piston set, part number K673M81, is designed for the 93-01 Honda B16A Civic Si and features an 81mm bore. These are shelf stock pistons, meaning they are a popular, readily available size for common performance builds, but you must use a gasket that is .040 inches thick or larger with this kit.

These pistons are forged and machined in the USA from 2618 aluminum, which gives them improved tensile strength over cast aluminum. They come with precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal. The fully machined crown also adds to their durability. For reduced friction, quieter operation, and resistance to seizure, the piston skirts are coated with ArmorGlide. These pistons are built to handle heavy to severe duty performance applications, and they feature forced pin oiling to ensure the wrist pins stay well-lubricated under stress.

This set includes four pistons, each with a 30.00mm compression height and a 0.8268 inch pin diameter. Please note that these pistons are not CARB approved and cannot be shipped to California. They are intended for racing and off-road use where emissions regulations do not apply.