Top End Piston Kit 80-81 Yamaha YZ 250 70.0mm Standard Vintco KTY12-00

This VintCo top end piston kit is for the 1980–1981 Yamaha YZ250 and is supplied in 70.0 mm standard bore size. It is a complete rebuild kit containing the piston, rings, pin, clips, top end bearing, and a full top-end gasket set for a straightforward top end overhaul. The components are produced using modern materials and manufacturing methods for OEM-equivalent or better fit and performance. The kit is priced at 10% less than purchasing the included 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
• Supplied with base gasket
• Supplied with intake gasket
• Supplied with exhaust gasket
• Intended for Yamaha YZ250 top end rebuilds
• OEM part numbers supplied for exact application checking
• Additional size options available

Specifications

• VintCo Part Number: KTY12-00
• Product type: Top End Piston Kit
• Standard bore size: 70.0 mm
• Piston diameter: 69.94 mm
• Piston clearance: 0.06 mm
• Piston construction: Forged
• Piston coating: MoS2 break-in coating
• Piston origin: Germany

Cross-Reference OEM Part Numbers

• Piston: 2K7-11631-01-96
• Head gasket: 3R4-11181-00-00
• Base gasket: 3R4-11351-01-00
• Intake gasket: 80L-13621-01-00
• Exhaust gasket: 3R4-14613-00-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1980 Yamaha YZ250
• 1981 Yamaha YZ250