This VintCo piston kit is a standard-bore 64.0 mm replacement piston assembly for Yamaha RD350 models from 1973-1975 and RD400 models from 1976-1981. Designed for vintage 2-stroke applications, it is manufactured using modern materials and production methods for OEM-equivalent or better fit and performance. The kit includes one complete piston assembly with piston, rings, pin and clips, while the wrist pin bearing is available separately.

Features

• Suitable for vintage 2-stroke Yamaha RD350 and RD400 models
• Complete piston assembly
• Includes 1 piston, rings, pin and clips
• Wrist pin bearing sold separately
• OEM-referenced fitment

Specifications

• VintCo Part Number: PSY03-00
• Standard size
• Piston diameter: 64.0 mm
• Actual size: 63.94 mm
• Clearance: 0.06 mm
• Forged piston
• MOS2 coated for break-in
• Made in Germany

Cross-Reference OEM Part Numbers

• 360-11631-03-96
• 1A1-11631-00-96
• 2V0-11631-01-97

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