This VintCo top end piston kit is a complete rebuild set for the 1975 Yamaha MX250 and 1976 Yamaha YZ250. It includes a piston, rings, pin, clips, top end bearing, and a full top-end gasket kit with head, base, intake, and exhaust gaskets. The kit is designed for OEM-equivalent fitment and performance using modern manufacturing methods, and is supplied at a price 10% lower than purchasing the components individually. Additional size options are also available.

Features

• Complete top end rebuild kit
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes head gasket
• Includes base gasket
• Includes intake gasket
• Includes exhaust gaskets
• Designed for OEM-equivalent fitment and performance
• Suitable for specified Yamaha MX250 and YZ250 rebuilds
• Additional size options available

Specifications

• VintCo Part Number: KTY08-1.0
• Piston size: 71.0 mm
• Oversize: +1.0 mm
• Piston measurement: 70.94 mm
• Piston clearance: 0.06 mm
• Piston construction: Forged
• Country of manufacture: Germany
• Piston coating: MoS2 coating for break-in

Cross-Reference OEM Part Numbers

• Piston: 2K7-11638-01-00
• Head gasket: 434-11181-00-00
• Base gasket: 364-11351-01-00
• Intake gasket: 8Y7-13556-01-00
• Exhaust gasket: 214-14613-09-00
• Exhaust gasket: 248-14623-10-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1975 Yamaha MX250
• 1976 Yamaha YZ250