Skip to product information
TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5
  • TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5
  • TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5
  • TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5
  • TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5
TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5

TOP END PISTON KIT 78-78 YAMAHA YZ 125 57.5mm 1.5mm OVER VINTCO KTY03-1.5

£183.21 GBP
Taxes included. Shipping calculated at checkout.

VintCo KTY03-1.5 is a complete top end piston kit for the 1978 Yamaha YZ125, supplied with a 57.5 mm (+1.5 mm over) piston assembly, top end bearing and full top-end gasket set. The kit is intended to provide the required components for a top-end rebuild in one package, using modern materials and manufacturing methods for OEM-level fitment and performance. Additional size options are also available.

Features

  • Complete top end rebuild kit for the 1978 Yamaha YZ125
  • Includes piston, rings, pin and clips
  • Includes top end bearing
  • Includes full top-end gasket kit
  • Gasket kit includes head gasket, base gasket, intake gasket and exhaust gaskets
  • Forged piston manufactured in Germany
  • MoS2-coated piston for running-in
  • Kit pricing is 10% lower than purchasing the components individually

Specifications

  • VintCo Part Number: KTY03-1.5
  • Product type: Top End Piston Kit
  • Nominal piston size: 57.5 mm
  • Oversize: +1.5 mm
  • Piston diameter: 57.44 mm
  • Piston clearance: 0.06 mm

Cross-Reference OEM Part Numbers

  • Piston: 2X3-11111-00-00
  • Head gasket: 2X3-11181-00
  • Base gasket: 18G-11351-02-00
  • Intake gasket: 3TT-13621-00-00
  • Exhaust gasket: 3PA-14613-10-00
  • Exhaust gasket: 248-14623-10-00
  • Wrist pin bearing: 93310-216L2-00

Vehicle Fitments

  • 1978 Yamaha YZ125