Wiseco K686M865 Toyota 3TC Forged Piston Kit 86.50mm Bore 63cc Head

The Wiseco K686M865 is a high-performance forged piston kit engineered specifically for the Toyota 3TC 1.8L engine with a 63cc combustion chamber head. Featuring an 86.50mm bore, this kit is ideal for builders seeking a precise oversize fit for performance rebuilds and racing applications.

Part of Wiseco's Professional Series, these pistons are no-compromise components built for serious racers and engine builders. Each kit includes pistons, rings, wrist pins, and pin locks — everything needed for a complete piston installation.

Key Features:

• Bore: 86.50mm (3.406 in.)
• Compression Height: 34.92mm (1.375 in.)
• Pin Diameter: 22.00mm (0.8661 in.)
• 63cc Head Compatible combustion chamber design
• 2618 High-Strength Aluminum Alloy — forged for superior tensile strength over cast or hypereutectic pistons
• ArmorGlide® Skirt Coating — reduces friction, resists seizure, and provides quieter operation
• Fully Machined Crown Features with precision ring grooves
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility
• Includes premium rings, wrist pins, and locks

Wiseco's advanced forging process and extensive heat-treat and finishing operations deliver the strength and tight tolerances demanded by high-performance engine builds. The K686M865 is a proven choice for Toyota 3TC sport compact builds ranging from street performance to heavy-duty race use.