Top End Piston Kit 86-87 Yamaha YZ 125 57.5mm 1.5mm Over Vintco KTY66-1.5

VintCo top end piston kit KTY66-1.5 is a complete rebuild kit for 1986-1987 Yamaha YZ125 models, supplied with a 57.5 mm piston in +1.5 mm oversize, rings, pin, clips, a wrist pin bearing, and a full top-end gasket set including head, base, intake, exhaust, O-ring, holder and power valve gaskets. The kit is manufactured using modern materials and production methods for OEM-equivalent fitment and performance, with OEM part number cross-references provided, and is priced 10% lower than purchasing the included items separately.

Features

• Complete top end rebuild kit
• Includes piston, rings, pin and clips
• Includes wrist pin bearing
• Includes full top-end gasket set
• Covers head, base, intake, exhaust, O-ring, holder and power valve gasket positions
• Intended for straightforward top end rebuild work
• OEM part number cross-references provided for exact fitment
• Manufactured with modern materials and production methods for OEM-equivalent fitment and performance
• Priced 10% lower than purchasing the included items individually

Specifications

• VintCo Part Number: KTY66-1.5
• Piston diameter: 57.5 mm
• Oversize: +1.5 mm
• Piston construction: Forged
• Piston coating: MOS2
• Country of manufacture: Germany
• Standard: 57.44 mm
• Clearance: 0.06 mm

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