Wiseco 6550M86 Pro Tru Sport Compact Series Forged Piston Bore - 86mm

The Wiseco 6550M86 is a Pro Tru Sport Compact Series forged replacement piston with an 86.00mm bore, engineered for performance sport compact engine builds. Forged and CNC-machined in Ohio using dedicated forgings specific to the final piston shape, the Pro Tru line delivers a stronger, lighter piston than standard cast alternatives without the cost of a fully custom unit.

Key Features:

• Forged 4032 aluminum construction — stronger and lighter than cast pistons, purpose-built for performance applications
• Dedicated forgings — piston shape requires minimal machining, resulting in improved strength and reduced weight
• CNC-machined on state-of-the-art equipment for precise tolerances and consistent fitment
• Plasma moly ring package included — pre-gapped 1/16, 1/16, 3/16 rings provide excellent combustion seal, reduced friction, and extended service life
• Wrist pin included — complete assembly-ready piston with rings and pin
• Multiple volume options available — allows engine builders to select the exact compression ratio for their application
• Recommended ring set: 8600XX
• Made in the USA by skilled craftsmen in Mentor, Ohio

The Pro Tru Sport Compact series represents Wiseco's best-value forged piston for street performance and mild competition builds. Each piston is sold individually, making it easy to replace a single cylinder or build a custom set for your specific application.