This top end piston kit is designed for 1980-1981 Yamaha YZ250 models and provides the components required for a complete top-end rebuild in one package. The kit includes a VintCo piston kit with piston, rings, pin and clips, along with a top end bearing and a full top-end gasket set comprising the head gasket, base gasket, intake gasket and exhaust gasket. Components are produced using modern materials and manufacturing methods for OEM-equivalent fitment and performance. The kit price represents a 10% reduction compared with purchasing the components individually, and additional size options are available.

Features

• Complete top-end rebuild kit
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes full top-end gasket kit
• Supplied with head gasket, base gasket, intake gasket and exhaust gasket
• Intended for OEM-equivalent fitment and performance
• Additional size options available
• Kit price includes a 10% saving compared with purchasing individual components

Specifications

• VintCo Part Number: KTY12-1.0
• Product Type: Top End Piston Kit
• Piston size: 71.0 mm
• Oversize: +1.0 mm
• OEM reference piston size: 70.94 mm
• Piston clearance: 0.06 mm
• Forged piston
• MoS2-coated piston for break-in
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Piston: 2K7-11638-01-00
• Head gasket: 3R4-11181-00-00
• Base gasket: 3R4-11351-01-00
• Intake gasket: 80L-13621-01-00
• Exhaust gasket: 3R4-14613-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1980 Yamaha YZ250
• 1981 Yamaha YZ250