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PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
  • PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5
PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5

PISTON KIT 91-91 YAMAHA YZ WR 250 68.5mm 0.5mm OVER VINTCO PSY21-0.5

£151.16 GBP
Taxes included. Shipping calculated at checkout.

VintCo piston kit PSY21-0.5 is a replacement piston assembly for 1991 Yamaha YZ250 and WR250 2-stroke models. Supplied in a 68.5 mm size with +0.5 mm oversize, this kit is intended for engine rebuild work and includes the piston, rings, pin and clips. It is manufactured using modern materials and production methods for OEM-style fitment and performance, with a MoS2 coating to support initial running-in.

Features

  • Complete piston kit with piston, rings, pin and clips
  • Suitable for vintage 2-stroke engine rebuilds
  • MoS2 coating supports break-in
  • Wrist pin bearing sold separately

Specifications

  • VintCo Part Number: PSY21-0.5
  • Piston diameter: 68.5 mm
  • Oversize: +0.5 mm
  • Piston size: 68.44 mm
  • Clearance: 0.06 mm
  • Construction: Forged piston
  • Made in Germany

Vehicle Fitments

  • 1991 Yamaha WR250
  • 1991 Yamaha YZ250