VintCo PSY04-00 is a standard-bore piston kit for 1976-1978 Yamaha YZ400 and 1976 Yamaha IT400 models. Intended for vintage 2-stroke applications, it includes the piston, rings, pin and clips, and is manufactured using modern materials and production methods to provide OEM-equivalent fitment and performance. A wrist pin bearing is available separately.

Features

• Complete piston kit with piston, rings, pin and clips
• Suitable for vintage 2-stroke engine rebuilds
• Wrist pin bearing available separately
• MoS2-coated for running-in

Specifications

• VintCo Part Number: PSY04-00
• Standard bore size: 85.0 mm
• Piston size: 84.92 mm
• Clearance: 0.08 mm
• Forged piston
• Made in Germany

Cross-Reference OEM Part Numbers

• Yamaha OEM Part Number: 2K8-11631-00-96

Vehicle Fitments

• 1976 Yamaha YZ400
• 1976 Yamaha IT400
• 1977 Yamaha YZ400
• 1978 Yamaha YZ400