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PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
  • PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5
PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5

PISTON KIT 74-75 YAMAHA YZ 250 71.5mm +1.5mm OVER VINTCO PSY34-1.5

£161.57 GBP
Taxes included. Shipping calculated at checkout.

VintCo PSY34-1.5 is a piston kit for 1974-1975 Yamaha YZ250 models, supplied in a 71.5mm bore size with +1.5mm oversize. It is intended for vintage 2-stroke engine rebuilds and includes the piston, rings, pin and clips. The piston is manufactured using modern materials and manufacturing techniques for fit and performance comparable to OEM, and is finished with a MoS2 coating for initial running-in.

Features

  • Complete piston kit including piston, rings, pin and clips
  • Suitable for vintage 2-stroke Yamaha YZ250 engine rebuilds
  • Forged piston
  • MoS2 coated for initial running-in
  • Wrist pin bearing sold separately
  • Additional size options available
  • Rings will not work with the original chrome-plated Yamaha cylinder
  • Rings are compatible only with Nikasil plating or an iron liner

Specifications

  • VintCo Part Number: PSY34-1.5
  • Bore size: 71.5mm
  • Oversize: +1.5mm
  • Piston size: 71.44mm
  • Clearance: 0.06mm
  • Country of manufacture: Germany

Vehicle Fitments

  • 1974 Yamaha YZ250
  • 1975 Yamaha YZ250