PISTON KIT 73-81 YAMAHA RD 350 400 65.0mm 1.0mm OVER VINTCO PSY03-1.0

This VintCo piston kit is a complete single-piston assembly for 1973-1975 Yamaha RD350 and 1976-1981 Yamaha RD400 models. Intended for vintage 2-stroke engine rebuilds and repairs, it includes one piston, rings, pin and clips, and is produced using modern materials and manufacturing methods for OEM-equivalent fitment and performance. The piston is forged, MoS2 coated for break-in, and the wrist pin bearing is available separately.

Features

• Complete single-piston assembly
• Includes 1 piston, rings, pin and clips
• Suitable for vintage 2-stroke engine rebuilds
• Forged piston
• MoS2 coated for break-in
• Wrist pin bearing sold separately
• Produced using modern materials and manufacturing techniques
• Designed for OEM-equivalent fitment and performance

Specifications

• VintCo Part Number: PSY03-1.0
• Piston size: 65.0 mm
• Oversize: +1.0 mm
• Piston measurement: 64.94 mm
• Clearance: 0.06 mm
• Manufactured in Germany

Cross-Reference OEM Part Numbers

• 1A1-11638-00-00
• 2V0-11638-01-00

Vehicle Fitments

• 1973 Yamaha RD350
• 1974 Yamaha RD350
• 1975 Yamaha RD350
• 1976 Yamaha RD400
• 1977 Yamaha RD400
• 1978 Yamaha RD400
• 1979 Yamaha RD400
• 1980 Yamaha RD400
• 1981 Yamaha RD400