Wiseco Honda J32 +4cc Dome 89.25mm Bore Piston Kit

If you're building a high-performance Honda J32 engine, this Wiseco piston kit is designed to handle serious power. These are forged pistons, meaning they start as a block of 2618 aluminum that's heated and hammered into shape, giving them much better tensile strength than cast pistons. This makes them well-suited for heavy or severe duty race applications where reliability under extreme stress is critical.

Wiseco machines these pistons right here in the USA. You'll find precision ring grooves, an anti-detonation groove, and other features to improve ring seal, which is key for both power and engine longevity. The fully machined crown helps ensure consistent combustion, and the forced pin oiling system keeps the wrist pin lubricated. Plus, they come with an ArmorGlide skirt coating that helps reduce friction, resist seizure, and operate more quietly.

This kit includes six pistons, each with a +4cc dome and a bore size of 89.25mm. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are intended for serious racers and builders looking to push their engines to the limit.