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PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
  • PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm
PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm

PISTON KIT YZF WRF 250 2-RING, WOSSNER 8713DC 08-13 77mm

£175.93 GBP
Taxes included.

Wossner forged piston kit with a 77.02mm bore and 76.98mm diameter, designed for Yamaha YZ250F and WR250F models. This 2-ring piston is engineered for high performance, featuring superior strength and design. Manufactured in Germany, it ensures optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.

Features

  • Forged construction for superior strength
  • Optimized heat transfer for efficient combustion
  • Elliptical design for uniform load distribution
  • 2-ring piston design for performance applications
  • Increased compression ratio for improved power output
  • Manufactured in Germany

Specifications

  • Bore: 77.02mm
  • Diameter: 76.98mm
  • Display (cm³): 249
  • Stroke (mm): 53.60
  • Clearance (mm): 0.04
  • Wossner Compression Ratio: 14.10:1
  • OEM Compression Ratio: 13.50:1
  • Dome Volume (cm³): -5.00
  • Compression Height (mm): 22.50

Cross-Reference OEM Part Numbers

  • Wossner Piston Yamaha YZ250F (PN# 8713DC)
  • Lock P/N: CW16
  • Pin P/N: WP059
  • Ring Set P/N: 770XAS
  • Rod P/N: P4005

Vehicle Fitments

  • Yamaha YZ250F (2008-2013)
  • Yamaha WR250F (2008-2013)