Piston Kit 76-79 YZ250 70.50, Wossner 8179D050 Yamaha

Description

Wossner forged piston kit with a 70.50mm bore and 70.44mm diameter, designed for Yamaha models. Manufactured in Germany, this piston offers superior strength and design, ensuring optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.

Features

  • Forged construction for superior strength
  • Optimized heat transfer for efficient combustion
  • Elliptical design for uniform load distribution
  • Manufactured in Germany

Specifications

  • Bore: 70.50mm
  • Diameter: 70.44mm
  • Display (cm³): 246
  • Stroke (mm): 64.00
  • Clearance (mm): 0.06
  • Compression Ratio: 2-Stroke
  • Compression Height (mm): 33.00

Cross-Reference OEM Part Numbers

  • Wossner Piston Yamaha YZ250 (PN# 8179D050)
  • Lock P/N: CW18
  • Pin P/N: WP033
  • Ring Set P/N: RSB7050 x 2

Vehicle Fitments

  • Yamaha YZ250 (1976-1979)
  • Yamaha IT250 (1978-1980)
  • Yamaha TY250 (1974-1978)
  • Yamaha MC250 (1973-1975)
  • Yamaha DT250 (1974-1979)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer Model Years
YAMAHA MX 250 1973-1975
YAMAHA YZ 250 1976-1979
YAMAHA TY 250 1974-1978
YAMAHA IT 250 1978-1980
YAMAHA DT 250 1974-1979

Piston Kit 76-79 YZ250 70.50, Wossner 8179D050 Yamaha

Product form

Wossner forged piston kit with a 70.50mm bore and 70.44mm diameter, designed for Yamaha models. Manufactured in Germany, this piston... Read more

3 in stock 1-2 business days

£169.84 Incl. VAT

    • Guaranteed secure & safe checkout.

      shop pay

    SKU: 56-W234+050.WO

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

    Description

    Wossner forged piston kit with a 70.50mm bore and 70.44mm diameter, designed for Yamaha models. Manufactured in Germany, this piston offers superior strength and design, ensuring optimal heat transfer to cylinder walls. Its elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse.

    Features

    • Forged construction for superior strength
    • Optimized heat transfer for efficient combustion
    • Elliptical design for uniform load distribution
    • Manufactured in Germany

    Specifications

    • Bore: 70.50mm
    • Diameter: 70.44mm
    • Display (cm³): 246
    • Stroke (mm): 64.00
    • Clearance (mm): 0.06
    • Compression Ratio: 2-Stroke
    • Compression Height (mm): 33.00

    Cross-Reference OEM Part Numbers

    • Wossner Piston Yamaha YZ250 (PN# 8179D050)
    • Lock P/N: CW18
    • Pin P/N: WP033
    • Ring Set P/N: RSB7050 x 2

    Vehicle Fitments

    • Yamaha YZ250 (1976-1979)
    • Yamaha IT250 (1978-1980)
    • Yamaha TY250 (1974-1978)
    • Yamaha MC250 (1973-1975)
    • Yamaha DT250 (1974-1979)

    Vehicle Compatibility

    Please check the exact model and year before ordering.

    Manufacturer Model Years
    YAMAHA MX 250 1973-1975
    YAMAHA YZ 250 1976-1979
    YAMAHA TY 250 1974-1978
    YAMAHA IT 250 1978-1980
    YAMAHA DT 250 1974-1979

    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