2Bros Parts

PISTON KIT 76-79 YZ250 70.50, WOSSNER 8179D050 YAMAHA

$170.68

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Delivery to United States 5–8 business days

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Wossner forged piston kit with a 70.50mm bore and 70.44mm diameter. 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 include forged construction for superior strength, optimized heat transfer for efficient combustion, and an elliptical design for uniform load distribution. 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. Includes Wossner Piston Yamaha YZ250 (PN# 8179D050), Lock P/N: CW18, Pin P/N: WP033, and Ring Set P/N: RSB7050 x 2.

Specifications
SKU
56-W234+050.WO
Brand
Wossner
Availability
In Stock (2)
General Product Group
Engine
General Product Type
Pistons & Kits
General Size
70.5mm
Variant Id
255131
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Wossner Forged Piston Kit 70.50mm

Enhance the performance and durability of your motorcycle with this Wossner forged piston kit. Engineered for superior strength and efficiency, this piston is manufactured in Germany to exacting standards. Its advanced design ensures optimal heat transfer to the cylinder walls, promoting efficient combustion and consistent engine operation. The unique elliptical profile guarantees a uniform bearing surface even under extreme heat expansion. This design minimizes localized pressure points, allowing for even distribution of thrust loads and effectively preventing piston collapse, ensuring reliable performance.

Key Features:

  • Forged construction for exceptional strength and longevity.
  • Optimized heat transfer design for improved combustion efficiency.
  • Elliptical piston profile for uniform load distribution under thermal stress.
  • Precision manufactured in Germany.

Specifications:

  • Bore Size: 70.50mm
  • Piston Diameter: 70.44mm
  • Piston Clearance: 0.06mm
  • Compression Height: 33.00mm
  • Stroke: 64.00mm
  • Displacement (cm³): 246
  • Compression Type: 2-Stroke

Included Components:

  • Lock Pin Part Number: CW18
  • Piston Pin Part Number: WP033
  • Ring Set Part Number: RSB7050 (Quantity: 2)
Before you buy

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Call or email us with your make, model and year and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

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