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PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
  • PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5
PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5

PISTON KIT 91-91 YAMAHA WR YZ 250 69.5mm 1.5mm OVER VINTCO PSY21-1.5

£151.16 GBP
Taxes included. Shipping calculated at checkout.

VintCo piston kit PSY21-1.5 is a complete oversize replacement kit for 1991 Yamaha WR250 and YZ250 models. Intended for vintage 2-stroke engine rebuilds, it includes the piston, rings, pin and clips, and is produced using modern materials and manufacturing methods for OEM-equivalent fit and performance. A wrist pin bearing is available separately, and additional size options are also available.

Features

  • Complete piston kit with piston, rings, pin and clips
  • Suitable for vintage 2-stroke engine rebuilds
  • OEM-equivalent fit and performance
  • Wrist pin bearing sold separately
  • Additional size options available
  • MoS2 coating to aid running-in

Specifications

  • VintCo Part Number: PSY21-1.5
  • Bore size: 69.5 mm
  • Oversize: +1.5 mm
  • Piston size: 69.44 mm
  • Clearance: 0.06 mm
  • Piston type: Forged
  • Country of manufacture: Germany

Vehicle Fitments

  • 1991 Yamaha WR250
  • 1991 Yamaha YZ250