Wiseco 6635M86 Pro Tru Sport Compact Forged Piston

The Wiseco 6635M86 is part of the Pro Tru Sport Compact Series — a line of American-made forged pistons engineered for performance-minded builders seeking race-proven quality at an exceptional value. Forged and precision-machined by skilled craftsmen in Ohio using state-of-the-art forging presses and CNC equipment, these pistons are built from dedicated forgings shaped specifically to the final piston geometry, resulting in components that are both stronger and lighter than industry-standard alternatives.

Key Features:

• Forged construction — dedicated forgings specific to final piston shape for superior strength-to-weight ratio
• American made — manufactured in Ohio with CNC machining for precise tolerances
• Plasma moly ring package included — pre-gapped 1/16", 1/16", 3/16" ring set for excellent combustion seal, reduced friction, and extended service life
• Wrist pins included — complete assembly-ready package
• 86mm bore diameter — direct replacement fitment
• Multiple compression ratio options — available in a variety of dome volumes so builders can dial in the exact compression ratio needed
• Recommended ring set: Wiseco 8600XX

Wiseco's Pro Tru line draws on decades of race-winning piston development across the most demanding sport compact applications. Whether building a street performance engine or a dedicated track motor, the 6635M86 delivers the reliability and precision that Wiseco is world-renowned for.