Piston Kit 1983 &85 YZ125 56.5, Wossner 8119D050 Yamaha 39W-11-630-00-00

Description

This Wossner piston kit features a 56.50mm bore (+0.01 oversize) and is designed for Yamaha YZ125 models from 1983 and 1985. Wossner forged pistons are engineered to offer superior strength and efficient heat transfer from the combustion chamber to the cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.

Features

  • Forged construction for increased strength
  • Optimized heat transfer to cylinder walls
  • Elliptical design for uniform bearing surface and thrust load distribution
  • Made in Germany

Specifications

  • Bore Size: 56.50mm
  • Bore (Actual Measured): 56.44mm
  • Display Volume: 83 cm³
  • Stroke: 84.00mm
  • Clearance: 0.06mm
  • Compression Ratio (Wossner): 2-stroke
  • Compression Ratio (OEM): 2-stroke
  • Compression Height: 30.80mm
  • Lock Part Number: CW16
  • Pin Part Number: WP036
  • Ring Set Part Number: RSB5600

Cross-Reference OEM Part Numbers

  • 39W-11-630-00-00
  • 55Y-11631-00-94

Vehicle Fitments

  • Yamaha YZ125 1983
  • Yamaha YZ125 1985

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer Model Years
YAMAHA YZ 125 1985
YAMAHA YZ 125 1983

Piston Kit 1983 &85 YZ125 56.5, Wossner 8119D050 Yamaha 39W-11-630-00-00

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This Wossner piston kit features a 56.50mm bore (+0.01 oversize) and is designed for Yamaha YZ125 models from 1983 and... Read more

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    SKU: 56-W503+050.WO

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    Description

    This Wossner piston kit features a 56.50mm bore (+0.01 oversize) and is designed for Yamaha YZ125 models from 1983 and 1985. Wossner forged pistons are engineered to offer superior strength and efficient heat transfer from the combustion chamber to the cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.

    Features

    • Forged construction for increased strength
    • Optimized heat transfer to cylinder walls
    • Elliptical design for uniform bearing surface and thrust load distribution
    • Made in Germany

    Specifications

    • Bore Size: 56.50mm
    • Bore (Actual Measured): 56.44mm
    • Display Volume: 83 cm³
    • Stroke: 84.00mm
    • Clearance: 0.06mm
    • Compression Ratio (Wossner): 2-stroke
    • Compression Ratio (OEM): 2-stroke
    • Compression Height: 30.80mm
    • Lock Part Number: CW16
    • Pin Part Number: WP036
    • Ring Set Part Number: RSB5600

    Cross-Reference OEM Part Numbers

    • 39W-11-630-00-00
    • 55Y-11631-00-94

    Vehicle Fitments

    • Yamaha YZ125 1983
    • Yamaha YZ125 1985

    Vehicle Compatibility

    Please check the exact model and year before ordering.

    Manufacturer Model Years
    YAMAHA YZ 125 1985
    YAMAHA YZ 125 1983

    Shipping & Delivery

    How long will my item take to arrive?

    Orders are typically dispatched within 1 working day and are shipped on a 24hour (non-guaranteed) service.

    Where do you ship to?

    We currently only ship orders within the UK.

    How can I track my order?

    Once your order has been dispatched, you will receive a tracking code. Tracking information is emailed to the email address that was provided when placing the order.

    Can I collect my order?

    Unfortunately we do not offer order collections from our fulfilment centre.

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