VintCo top end piston kit for the 1981 Yamaha YZ80, supplied as a complete top end rebuild package with a forged piston, gasket set and wrist pin bearing. Kit pricing includes a 10% discount compared with purchasing the items individually. The piston is made in Germany and features an MOS2 coating for running-in, with a 1.0 mm oversize configuration for 50.0 mm applications.

Features

• Complete top end piston kit
• Includes forged piston
• MOS2 coated for running-in
• Made in Germany
• Includes cylinder head gasket
• Includes cylinder base gasket
• Includes reed valve gasket
• Includes exhaust pipe gasket
• Includes wrist pin bearing
• Kit price includes 10% discount over individual items

Specifications

• VintCo Part Number: KTY25-1.0
• Nominal size: 50.0 mm
• Oversize: 1.0 mm
• Piston size: 49.95 mm
• Clearance: 0.05 mm

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