This top end piston kit is designed for the 1986–1987 Yamaha YZ125 and supplies the components required for a complete top-end rebuild in one package. The kit includes a VintCo piston kit with piston, rings, pin and clips, a top end bearing, and a full top-end gasket set. It is a standard 56 mm kit manufactured using modern materials and production methods for OEM-level fitment and performance.

Features

• Complete top end rebuild kit for Yamaha YZ125 models
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes full top-end gasket kit
• Includes head gasket
• Includes base gasket
• Includes intake gasket
• Includes exhaust pipe gasket
• Includes O-ring
• Includes holder gasket
• Includes power valve gasket
• Kit pricing includes a 10% saving compared with purchasing the components individually

Specifications

• VintCo Part Number: KTY66-00
• Piston size: 56 mm standard
• Piston measured size: 55.94 mm
• Clearance: 0.06 mm
• Piston type: forged
• Piston coating: MOS2
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Head Gasket: 93211-07720-00
• Head Gasket: 93210-65721-00
• Base Gasket: 1LX-11351-10-00
• Intake Gasket: 4TP-13621-00-00
• Exhaust Pipe Gasket: 1LX-14613-01-00
• Exhaust Pipe Gasket: 93210-42728-00
• O-Ring: 93210-270A8-00
• Holder Gasket: 5X4-1131N-10-00
• Power Valve Gasket: 3LX-11993-01-00

Vehicle Fitments

• 1986 Yamaha YZ125
• 1987 Yamaha YZ125