Piston Kit 81-19 PW50 41.00, 8267D100 Wossner Yamaha

Description

This Wossner forged piston kit is a +1.00mm oversize replacement for Yamaha PW50 models from 1981 to 1997. Designed for two-stroke engine rebuilds requiring an increased bore size, it provides exceptional durability and precise thermal expansion characteristics.

Features

  • Forged construction ensures superior strength and wear resistance

  • Elliptical design delivers a uniform bearing surface under heat expansion

  • Efficient heat transfer from combustion chamber to cylinder walls

  • Prevents piston collapse by evenly distributing thrust loads

  • Manufactured in Germany

Specifications

  • Bore Size: 41.00mm

  • Actual Piston Size: 40.95mm

  • Stroke: 39.20mm

  • Piston Clearance: 0.05mm

  • Wossner Compression Ratio: 2-stroke

  • OEM Compression Ratio: 2-stroke

  • Compression Height: 24.90mm

  • Lock Part Number: CW10

  • Pin Part Number: WP105

  • Ring Set Part Number: RSB4100

Cross-Reference OEM Part Numbers

  • Part No: 8267D100

Vehicle Fitments

  • Yamaha PW50 (1981–1997)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer Model Years
YAMAHA PW 50 1981-2016
YAMAHA PW 50 1981-2020
YAMAHA PW 50 1985-2017
YAMAHA PW 50 1981-2019

Piston Kit 81-19 PW50 41.00, 8267D100 Wossner Yamaha

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This Wossner forged piston kit is a +1.00mm oversize replacement for Yamaha PW50 models from 1981 to 1997. Designed for... Read more

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    SKU: 56-W938+100_WO

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    Description

    This Wossner forged piston kit is a +1.00mm oversize replacement for Yamaha PW50 models from 1981 to 1997. Designed for two-stroke engine rebuilds requiring an increased bore size, it provides exceptional durability and precise thermal expansion characteristics.

    Features

    • Forged construction ensures superior strength and wear resistance

    • Elliptical design delivers a uniform bearing surface under heat expansion

    • Efficient heat transfer from combustion chamber to cylinder walls

    • Prevents piston collapse by evenly distributing thrust loads

    • Manufactured in Germany

    Specifications

    • Bore Size: 41.00mm

    • Actual Piston Size: 40.95mm

    • Stroke: 39.20mm

    • Piston Clearance: 0.05mm

    • Wossner Compression Ratio: 2-stroke

    • OEM Compression Ratio: 2-stroke

    • Compression Height: 24.90mm

    • Lock Part Number: CW10

    • Pin Part Number: WP105

    • Ring Set Part Number: RSB4100

    Cross-Reference OEM Part Numbers

    • Part No: 8267D100

    Vehicle Fitments

    • Yamaha PW50 (1981–1997)

    Vehicle Compatibility

    Please check the exact model and year before ordering.

    Manufacturer Model Years
    YAMAHA PW 50 1981-2016
    YAMAHA PW 50 1981-2020
    YAMAHA PW 50 1985-2017
    YAMAHA PW 50 1981-2019

    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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