Complete top end piston kit for the 1978 Yamaha YZ250, supplied with a VintCo standard-size piston assembly, rings, pin, clips, top end bearing and a full top-end gasket set for rebuild work. The kit combines the required components in one package and 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 full top-end gasket kit
• Includes head gasket, base gaskets, intake gaskets and exhaust gasket
• OEM part numbers provided for fitment verification
• Kit price includes a 10% saving compared with purchasing the items individually
• Additional size options are available

Specifications

• VintCo Part Number: KTY10-00
• Piston size: 70.0 mm standard
• Piston diameter: 69.94 mm
• Piston clearance: 0.06 mm
• Piston type: Forged
• Piston coating: MoS2
• Country of manufacture: Germany

Cross-Reference OEM Part Numbers

• Piston: 2K7-11631-01-96
• 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: 2K7-14613-09-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• Yamaha YZ250 1978