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PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
  • PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5
PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5

PISTON KIT 74-75 YAMAHA YZ 250 70.5mm 0.5mm OVER VINTCO PSY34-0.5

£161.57 GBP
Taxes included. Shipping calculated at checkout.

This VintCo piston kit is for 1974-1975 Yamaha YZ250 models and is intended for vintage 2-stroke engine rebuilds. It uses modern materials and manufacturing methods for OEM-level fitment and performance, and includes the piston, rings, pin and clips. This kit is a 70.5 mm piston in +0.5 mm oversize for vintage motorcycle applications.

Features

  • Complete piston kit with piston, rings, pin and clips
  • Suitable for 1974-1975 Yamaha YZ250 models
  • Forged piston
  • MoS2 coated for break-in
  • Wrist pin bearing sold separately
  • Rings will not work with the original chrome-plated Yamaha cylinder on 1974-1975 YZ250 models
  • Rings are only compatible with Nikasil plating or an iron liner
  • Made in Germany

Specifications

  • VintCo Part Number: PSY34-0.5
  • Piston size: 70.5 mm
  • Oversize: +0.5 mm
  • Piston measurement: 70.44 mm
  • Clearance: 0.06 mm

Vehicle Fitments

  • 1974 Yamaha YZ250
  • 1975 Yamaha YZ250