This VintCo top end piston kit is a complete rebuild set for the 1975 Yamaha MX250 and 1976 Yamaha YZ250. It includes a piston kit with piston, rings, pin and clips, a top end bearing, and a full top-end gasket kit comprising the head gasket, base gasket, intake gasket and exhaust gaskets. The kit is manufactured using modern materials and production methods for OEM-equivalent fitment and performance, and is supplied as a complete package priced 10% lower than purchasing the components individually.

Features

• Complete top end rebuild kit
• Includes piston, rings, pin and clips
• Includes top end bearing
• Includes full top-end gasket kit
• Head gasket included
• Base gasket included
• Intake gasket included
• Exhaust gaskets included
• OEM part numbers supplied for exact fitment reference
• Additional size options are available

Specifications

• VintCo Part Number: KTY08-0.5
• Product type: Top End Piston Kit
• Oversize: 70.5 mm
• Size: +0.5 mm over
• Piston diameter: 70.44 mm
• Piston clearance: 0.06 mm
• Piston construction: Forged
• Country of manufacture: Germany
• Piston coating: MoS2 break-in coating

Cross-Reference OEM Part Numbers

• Piston: 2K7-11631-01-00
• 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