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PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
  • PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX
PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX

PISTON KIT 98-01 YZ125 55.00, WOSSNER 8091D100 YAMAHA MX

£97.07 GBP
Taxes included.

This Wossner piston kit with a 55.00mm bore (+1.00mm oversize) is designed for Yamaha YZ125 and WR125 models from 1998 to 2001. Manufactured in Germany, the forged piston ensures strength, uniform heat expansion, and reliable performance under two-stroke engine conditions.

Features

  • Forged piston construction enhances strength and durability

  • Efficient heat transfer from combustion chamber to cylinder wall

  • Elliptical design ensures even pressure distribution and minimises piston distortion

  • Produced in Germany for consistent quality and precision

Specifications

  • Bore size: 55.00 mm

  • Actual piston size: 54.95 mm

  • Display (cm³): 125

  • Stroke (mm): 54.50

  • Clearance (mm): 0.05

  • Compression ratio: 2-stroke (Wossner and OEM)

  • Compression height (mm): 28.00

Vehicle Fitments

  • 1998 Yamaha WR125

  • 1998 Yamaha YZ125 Base

  • 1999 Yamaha WR125

  • 1999 Yamaha YZ125 Base

  • 2000 Yamaha WR125

  • 2000 Yamaha YZ125 Base

  • 2001 Yamaha WR125

  • 2001 Yamaha YZ125 Base

Included Components

  • Piston: Wossner PN# 8091D100

  • Lock: PN# CW15

  • Pin: PN# WP032

  • Ring Set: PN# RSB5500

  • Rod: PN# P2019