This VintCo top end piston kit is designed for 1986-1987 Yamaha YZ125 models and provides the parts required for a complete top end rebuild in 56.5 mm (+0.5 mm oversize) form. The kit includes a piston, rings, pin, clips, a wrist pin bearing, and a full top-end gasket set with head, base, intake, exhaust, holder and power valve gaskets, plus an O-ring. Components are manufactured using modern materials and production methods for OEM-equivalent fit and performance, and the kit is priced at 10% less than purchasing the components individually.

Features

• Complete top end rebuild kit for 1986-1987 Yamaha YZ125 models
• Includes piston, rings, pin and clips
• Includes wrist pin bearing
• Includes head gaskets, base gasket, intake gasket, exhaust pipe gaskets, holder gasket, power valve gasket and O-ring
• Intended to provide OEM-equivalent fit and performance
• Kit pricing is 10% lower than buying the parts individually

Specifications

• VintCo Part Number: KTY66-0.5
• Piston diameter: 56.5 mm
• Oversize: +0.5 mm
• Standard size: 56.44 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