VintCo KTY19-1.0 is a top end piston kit for 1974-1975 Yamaha YZ250 models, supplied in +1.0 mm oversize for a 71.0 mm application. The kit includes a forged piston with German MoS2 coating for break-in, along with the required head, base, intake and exhaust gaskets and a wrist pin bearing. Kit pricing includes a 10% saving compared with purchasing the items individually.

Features

• Top end piston kit for Yamaha YZ250 models
• Forged piston included
• MoS2-coated piston for break-in
• Includes head gasket
• Includes base gasket
• Includes intake gasket
• Includes exhaust gasket
• Includes wrist pin bearing
• Kit price includes a 10% discount over individual items

Specifications

• VintCo Part Number: KTY19-1.0
• Nominal piston size: 71.0 mm
• Piston size: 70.94 mm
• Oversize: +1.0 mm
• Clearance: 0.06 mm

Cross-Reference OEM Part Numbers

• Head gasket: 431-11181-00-00
• Base gasket: 214-11351-09-00
• Intake gasket: 8Y7-13556-01-00
• Exhaust gasket: 431-14613-00-00
• Wrist pin bearing: 93310-218A6-00

Vehicle Fitments

• 1974 Yamaha YZ250
• 1975 Yamaha YZ250