This top end piston kit is designed for 1973-1982 Yamaha GT1, GTMX, GT80 and MX80 models and combines the listed components in one package at a 10% saving compared with buying the items individually. The kit includes a standard-size piston, the required top end gaskets, and a wrist pin bearing for top end service work.

Features

• Complete top end kit
• Suitable for top end rebuild and service work
• Includes forged piston
• MOS2-coated piston for running-in
• Includes cylinder head gasket
• Includes cylinder base gasket
• Includes 2 reed valve gaskets
• Includes exhaust pipe gasket
• Includes wrist pin bearing

Specifications

• VintCo Part Number: KTY55-00
• Piston size: 47 mm standard
• Piston diameter: 46.95 mm
• Clearance: 0.05 mm
• Piston construction: Forged
• Country of manufacture: Germany
• Piston coating: MOS2

Cross-Reference OEM Part Numbers

• Cylinder head gasket: 2F4-1181-00-00
• Cylinder base gasket: 367-11351-01-00
• Reed valve gasket: 3MT-13621-00-00
• Exhaust pipe gasket: 3MT-14613-00-00

Vehicle Fitments

• 1973 Yamaha GT1
• 1973 Yamaha GTMX
• 1974 Yamaha GT80
• 1974 Yamaha GTMX
• 1975 Yamaha GT80
• 1975 Yamaha GTMX
• 1976 Yamaha GT80
• 1976 Yamaha GTMX
• 1977 Yamaha GTMX
• 1978 Yamaha GTMX
• 1979 Yamaha GTMX
• 1980 Yamaha MX80
• 1981 Yamaha MX80
• 1982 Yamaha MX80