This top end piston kit is designed for 1973-1975 Yamaha RD250 models and provides the main components required for a top end rebuild. The kit includes two forged pistons made in Germany with MOS2 coating for running-in, together with two cylinder head gaskets, two cylinder base gaskets, two reed valve gaskets, two exhaust pipe gaskets and two wrist pin bearings.

Features

• Complete top end kit for Yamaha RD250 models
• Includes two pistons, gasket set and two wrist pin bearings
• MOS2-coated pistons for running-in
• Kit pricing includes a 10% reduction compared with purchasing the included items separately

Specifications

• VintCo Part Number: KTY47-1.5
• Nominal kit size: 55.5 mm
• Piston size: 55.43 mm
• Oversize: 1.5 mm over
• Clearance: 0.07 mm
• Piston construction: forged
• Country of manufacture: Germany
• Cylinder head gaskets included: 2
• Cylinder base gaskets included: 2
• Reed valve gaskets included: 2
• Exhaust pipe gaskets included: 2
• Wrist pin bearings included: 2

Cross-Reference OEM Part Numbers

• Cylinder head gasket OEM part number: 280-11181-01-00
• Cylinder base gasket OEM part number: 278-11351-11-00
• Reed valve gasket OEM part number: 87A-13621-00-00
• Exhaust pipe gasket OEM part number: 3PA-14613-10-00

Vehicle Fitments

• 1973 Yamaha RD250
• 1974 Yamaha RD250
• 1975 Yamaha RD250