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PISTON KIT 02-04 YZ125 54.00 A, WOSSNER 8072DA YAMAHA MX 5NY-11631-01-D0
  • PISTON KIT 02-04 YZ125 54.00 A, WOSSNER 8072DA YAMAHA MX 5NY-11631-01-D0
  • PISTON KIT 02-04 YZ125 54.00 A, WOSSNER 8072DA YAMAHA MX 5NY-11631-01-D0
PISTON KIT 02-04 YZ125 54.00 A, WOSSNER 8072DA YAMAHA MX 5NY-11631-01-D0

PISTON KIT 02-04 YZ125 54.00 A, WOSSNER 8072DA YAMAHA MX 5NY-11631-01-D0

£97.07 GBP
Taxes included.

This Wossner piston kit features a 54.00mm bore and 53.94mm actual piston diameter, designed for Yamaha YZ125 models from 2002 to 2004. Built with forged construction, it delivers strength, optimal heat transfer, and consistent performance for 2-stroke engines under demanding conditions.

Features

  • Forged piston construction enhances durability and structural integrity

  • Promotes efficient heat transfer from the combustion chamber to the cylinder walls

  • Elliptical design ensures uniform bearing surface under thermal expansion

  • Distributes thrust loads evenly to reduce localised pressure and prevent piston collapse

  • Manufactured in Germany

Specifications

  • Bore: 54.00mm

  • Piston Diameter: 53.94mm

  • Display (cm³): 125

  • Stroke (mm): 54.50

  • Clearance (mm): 0.06

  • Compression Height (mm): 28.00

  • Wossner Compression Ratio: 2-stroke

  • OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

  • 5NY-11631-01-D0

  • 5NY-11631-01-C0

  • 5NY-11631-01-B0

  • 5NY-11631-01-A0

  • 797M05400

  • 09104787

  • Ring: 5NY-11611-00-00

  • Pin: 5UN-11633-00-00

  • Circlip: 93450-16068-00

Vehicle Fitments

  • Yamaha YZ125 2002–2004

Included Components

  • Lock: CW15

  • Pin: WP032

  • Ring Set: RSB5400

  • Rod: P2017

  • Part Number: 56-W797.A.WO (Piston PN# 8072DA)