Top End Piston Kit 77-77 Yamaha YZ 250 71.5mm +1.5mm Over Vintco KTY09-1.5

VintCo top end piston kit KTY09-1.5 is a complete rebuild kit for the 1977 Yamaha YZ250. It is intended for top-end engine service and includes the piston, rings, pin and clips, a top end bearing, and a full top-end gasket set with head, base, intake, and exhaust gaskets. The components are produced using modern materials and manufacturing methods for OEM-equivalent fitment and performance, with kit pricing set at 10% less than purchasing the items individually.

Features

• Complete top-end rebuild kit
• Suitable for 1977 Yamaha YZ250 applications
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes full top-end gasket kit
• Gasket kit includes head gasket, base gaskets, intake gaskets, and exhaust gaskets
• Forged piston
• Made in Germany
• MoS2-coated piston for break-in
• Produced with modern materials and manufacturing techniques
• Designed for OEM-equivalent fitment and performance
• Kit price includes a 10% saving compared to individual item purchase
• Additional size options are available

Specifications

• VintCo Part Number: KTY09-1.5
• Piston size: 71.5 mm
• Oversize: +1.5 mm
• Piston measurement: 71.44 mm
• Clearance: 0.06 mm

Cross-Reference OEM Part Numbers

• Head gasket: 1W3-11181-00-00
• Base gasket: 364-11351-01-00
• Base gasket: 2K7-11351-01-00
• Intake gasket: 8Y7-13556-01-00
• Intake gasket: 80L-13621-01-00
• Exhaust gasket: 214-14613-09-00
• Exhaust gasket: 248-14623-10-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1977 Yamaha YZ250