Wiseco 6596M86 Pro Tru Sport Compact Forged Piston Stroker - 86mm 4G63 4G64

The Wiseco 6596M86 is a Pro Tru Sport Compact Series forged replacement piston engineered for the Mitsubishi 4G63 engine paired with a 100mm 4G64 stroker crankshaft. With an 86mm (3.386") bore and .200" wall tool steel wrist pins, this piston is purpose-built to handle the demands of a stroked 4G63 rotating assembly. Rings and pins are included. The recommended ring set is 8600XX.

Key Features:

• Forged in Mentor, Ohio using dedicated forgings specific to the final piston shape — stronger and lighter than cast alternatives
• 86mm bore with precision CNC machining for tight tolerances and consistent cylinder fit
• .200" wall tool steel wrist pins for added strength under high-load stroker applications
• Plasma moly 1/16", 1/16", 3/16" pre-gapped ring package included for excellent combustion seal, friction reduction, and long service life
• Available in a variety of compression volumes, giving engine builders precise control over target compression ratio
• Sold as a single (replacement/individual) piston — ideal for replacing a damaged unit without purchasing a full set
• Recommended ring set: 8600XX (sold separately if not opting for the included ring pack)

Wiseco's Sport Compact Pro Tru line delivers forged piston performance at an accessible price point. By leveraging race-derived engineering experience and state-of-the-art in-house forging and CNC equipment, Wiseco produces pistons that meet the rigorous demands of performance street and track builds — without the premium cost of custom or professional-series options.