Wiseco Mitsubishi EVO 4-9 HD2 - Single Piston

Forged from 2618 aluminum, these Wiseco pistons are built for the demands of serious racing and heavy-duty builds. The 86.00 mm bore size is a key specification for performance engine work, and Wiseco machines these with precision ring grooves, anti-detonation features, and enhanced ring sealing to ensure optimal combustion control under high stress.

You'll also find an ArmorGlide skirt coating on these pistons. This isn't just for looks; it helps reduce friction, resist seizure, and contribute to quieter operation, which is notable in a performance-oriented component. The fully machined crown and forced pin oiling are further details that speak to their construction for severe duty applications. These are well-built pistons designed to handle the significant forces involved in performance engine builds.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.