This VintCo top end piston kit is a complete rebuild kit for 1980-1981 Yamaha YZ465 models, supplied in a 0.5mm over size for top end service work. The kit includes a piston, rings, pin, clips, top end bearing, and a full top-end gasket set comprising head, base, intake, and exhaust gaskets. It is manufactured using modern materials and production methods to provide OEM-equivalent fitment and performance.

Features

• Complete top end rebuild kit
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes head gasket, base gasket, intake gasket and exhaust gasket
• MoS2-coated piston for break-in
• Designed for OEM-equivalent fitment and performance
• Kit pricing is 10% lower than purchasing the components individually
• Additional size options are available
• Base gasket installation requires silicone

Specifications

• VintCo Part Number: KTY16-0.5
• Product category: Top End Piston Kit
• Nominal piston size: 85.5mm
• Oversize: +0.5mm
• Piston measurement: 85.42mm
• Piston clearance: 0.08mm
• Piston construction: Forged
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Piston: 4V4-11636-00-00
• Head gasket: 3R5-11181-00-00
• Base gasket: 40T-11351-01-00
• Intake gasket: 80L-13621-01-00
• Exhaust gasket: 3R4-14613-00-00
• Wrist pin bearing: 93310-418E9-00

Vehicle Fitments

• 1980 Yamaha YZ465
• 1981 Yamaha YZ465