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PISTON KIT 02-04 YZ125 54.00 C, WOSSNER 8072DC YAMAHA MX
  • PISTON KIT 02-04 YZ125 54.00 C, WOSSNER 8072DC YAMAHA MX
  • PISTON KIT 02-04 YZ125 54.00 C, WOSSNER 8072DC YAMAHA MX
PISTON KIT 02-04 YZ125 54.00 C, WOSSNER 8072DC YAMAHA MX

PISTON KIT 02-04 YZ125 54.00 C, WOSSNER 8072DC YAMAHA MX

£114.12 GBP
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This Wossner piston kit features a 54.02mm bore and 53.96mm actual piston diameter, designed for Yamaha YZ125 models from 2002 to 2004. Engineered with a +0.02mm oversize, this forged piston delivers reliable performance, enhanced heat transfer, and structural stability in high-performance 2-stroke engines.

Features

  • Forged piston ensures exceptional strength and durability

  • Engineered for effective heat transfer from the combustion chamber to cylinder walls

  • Elliptical profile provides a consistent bearing surface during thermal expansion

  • Even thrust load distribution prevents piston collapse and reduces localised stress

  • Manufactured in Germany

Specifications

  • Bore: 54.02mm

  • Piston Diameter: 53.96mm

  • 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

  • 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.C.WO (Piston PN# 8072DC)