Piston Kit YZ 250F 2019 76.96 A, Wossner 8957DA, B7B-11631-00-00

Description

The Wossner Forged Piston Kit (8957DA) with a standard 77mm bore is designed for the Yamaha YZ250F (2019). Engineered in Germany, this high-performance forged piston delivers strength, efficient heat transfer, and consistent load distribution. Its elliptical design minimises localised stress and helps prevent piston collapse under high-performance conditions.

Features

  • Forged construction for enhanced strength and durability

  • Designed for optimal combustion heat transfer to cylinder walls

  • Elliptical skirt profile ensures even thrust load distribution

  • Manufactured in Germany

Specifications

  • Piston Size: 77mm (STD)

  • Kit Part Number: 56-W8812.A.WO

  • Wossner Part Number: 8957DA

  • Piston Type: Forged

Cross-Reference OEM Part Numbers

  • B7B-11631-00-00

Vehicle Fitments

  • Yamaha YZ250F (2019)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer Model Years
YAMAHA YZ FX 250 2020
YAMAHA YZ FX 250 2020-2021
YAMAHA YZ F 250 2019-2020
YAMAHA WR F 250 2020
YAMAHA WR F 250 2020-2021
YAMAHA YZ F 250 2019-2021
YAMAHA YZF 250 2019
YAMAHA YZF 250 2018-2019

Piston Kit YZ 250F 2019 76.96 A, Wossner 8957DA, B7B-11631-00-00

Product form

The Wossner Forged Piston Kit (8957DA) with a standard 77mm bore is designed for the Yamaha YZ250F (2019). Engineered in... Read more

1 in stock 1-2 business days

£127.31 Incl. VAT

    • Guaranteed secure & safe checkout.

      shop pay

    SKU: 56-W8812.A.WO

    • Free shipping on all orders above £75
    • No hassle returns within 30 days

    Description

    The Wossner Forged Piston Kit (8957DA) with a standard 77mm bore is designed for the Yamaha YZ250F (2019). Engineered in Germany, this high-performance forged piston delivers strength, efficient heat transfer, and consistent load distribution. Its elliptical design minimises localised stress and helps prevent piston collapse under high-performance conditions.

    Features

    • Forged construction for enhanced strength and durability

    • Designed for optimal combustion heat transfer to cylinder walls

    • Elliptical skirt profile ensures even thrust load distribution

    • Manufactured in Germany

    Specifications

    • Piston Size: 77mm (STD)

    • Kit Part Number: 56-W8812.A.WO

    • Wossner Part Number: 8957DA

    • Piston Type: Forged

    Cross-Reference OEM Part Numbers

    • B7B-11631-00-00

    Vehicle Fitments

    • Yamaha YZ250F (2019)

    Vehicle Compatibility

    Please check the exact model and year before ordering.

    Manufacturer Model Years
    YAMAHA YZ FX 250 2020
    YAMAHA YZ FX 250 2020-2021
    YAMAHA YZ F 250 2019-2020
    YAMAHA WR F 250 2020
    YAMAHA WR F 250 2020-2021
    YAMAHA YZ F 250 2019-2021
    YAMAHA YZF 250 2019
    YAMAHA YZF 250 2018-2019

    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.

    WHY NOT CHECK OUT

    Recently viewed products

      © 2026 Radhouse, Powered by Shopify

        • American Express
        • Apple Pay
        • Diners Club
        • Discover
        • Google Pay
        • Maestro
        • Mastercard
        • PayPal
        • Shop Pay
        • Union Pay
        • Visa