VintCo top end piston kit KTY25-00 is a standard-size replacement kit for the 1981 Yamaha YZ80, intended for top-end service work and supplied as a complete package of key components. The kit includes a forged piston made in Germany with an MOS2 coating for break-in, a wrist pin bearing, and the required cylinder head, cylinder base, reed valve and exhaust pipe gaskets. Kit pricing includes a 10% discount compared with purchasing the items individually.

Features

• Complete top end piston kit for top-end rebuild and service work
• Includes forged piston
• Includes cylinder head gasket
• Includes cylinder base gasket
• Includes reed valve gasket
• Includes exhaust pipe gasket
• Includes wrist pin bearing

Specifications

• VintCo Part Number: KTY25-00
• Product type: Top End Piston Kit
• Nominal size: 49 mm standard
• Piston size: 48.95 mm
• Piston clearance: 0.05 mm
• Piston construction: Forged
• Piston coating: MOS2
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Cylinder Head Gasket: 4V1-11181-00-00
• Cylinder Base Gasket: 4V0-11351-10-00
• Reed Valve Gasket: 3TT-13621-00-00
• Exhaust Pipe Gasket: 3PA-14613-10-00

Vehicle Fitments

• 1981 Yamaha YZ80