Top End Piston Kit 77-77 Yamaha YZ 250 70.0mm Standard Vintco KTY09-00

VintCo KTY09-00 is a complete top end piston kit for the 1977 Yamaha YZ250, supplied in 70.0 mm standard-bore form for top-end rebuild work. The kit includes a piston assembly with rings, pin and clips, a wrist pin bearing, and a full top-end gasket set for the head, base, intake and exhaust. Components are produced using modern materials and manufacturing methods and are intended to provide OEM-level or better fitment and performance.

Features

• Complete top-end rebuild kit
• Includes piston, rings, pin and clips
• Includes wrist pin bearing
• Includes head gasket, base gaskets, intake gaskets and exhaust gaskets
• Supplied as a single kit for rebuild work
• OEM cross-reference part numbers provided for exact fitment verification
• Kit price includes a 10% saving compared with purchasing the components individually
• Additional size options are available

Specifications

• VintCo Part Number: KTY09-00
• Standard bore: 70.0 mm
• Piston diameter: 69.94 mm
• Piston clearance: 0.06 mm
• Piston construction: 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: 214-14613-09-00
• Exhaust gasket: 248-14623-10-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1977 Yamaha YZ250