Name: Piston Kit 83-87 YZ250 68.50, Wossner 8133D050 Yamaha MX
Brand: Wossner
SKU: 56-W560+050.WO

Piston Kit 83-87 YZ250 68.50, Wossner 8133D050 Yamaha MX

Wossner
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Description

This Wossner 68.50mm (+0.50 oversize) forged piston kit is designed for Yamaha YZ250 models from 1983 to 1987. Precision-engineered and manufactured in Germany, this piston features a forged construction for maximum strength and durability. The elliptical design ensures a uniform bearing surface during thermal expansion, reducing localised pressure and distributing thrust loads evenly to prevent piston collapse. It is optimised for effective heat transfer from the combustion chamber to the cylinder walls, making it well-suited for high-performance two-stroke applications.

Features

Forged piston for enhanced strength and longevity
Elliptical design ensures uniform surface contact during heat expansion
Minimises localised stress and evenly distributes thrust loads
Supports efficient combustion heat transfer to cylinder walls
Manufactured in Germany

Specifications

Bore: 68.50mm
Actual diameter: 68.44mm
Displacement: 246 cm³
Stroke: 68.00mm
Clearance: 0.06mm
Compression height: 36.00mm
Compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 56-W560+050.WO
Wossner Piston Kit No.: 8133D050
Lock: CW18
Pin: WP033
Ring Set: RDB6850
Rod: P2048 (for 1983–1989 models)

Vehicle Fitments

Yamaha YZ250 1983
Yamaha YZ250 1984
Yamaha YZ250 1985
Yamaha YZ250 1986
Yamaha YZ250 1987

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1983-1987

Piston Kit 83-87 YZ250 68.50, Wossner 8133D050 Yamaha MX

Wossner
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This Wossner 68.50mm (+0.50 oversize) forged piston kit is designed for Yamaha YZ250 models from 1983 to 1987. Precision-engineered and... Read more

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SKU: 56-W560+050.WO

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Description

This Wossner 68.50mm (+0.50 oversize) forged piston kit is designed for Yamaha YZ250 models from 1983 to 1987. Precision-engineered and manufactured in Germany, this piston features a forged construction for maximum strength and durability. The elliptical design ensures a uniform bearing surface during thermal expansion, reducing localised pressure and distributing thrust loads evenly to prevent piston collapse. It is optimised for effective heat transfer from the combustion chamber to the cylinder walls, making it well-suited for high-performance two-stroke applications.

Features

Forged piston for enhanced strength and longevity
Elliptical design ensures uniform surface contact during heat expansion
Minimises localised stress and evenly distributes thrust loads
Supports efficient combustion heat transfer to cylinder walls
Manufactured in Germany

Specifications

Bore: 68.50mm
Actual diameter: 68.44mm
Displacement: 246 cm³
Stroke: 68.00mm
Clearance: 0.06mm
Compression height: 36.00mm
Compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 56-W560+050.WO
Wossner Piston Kit No.: 8133D050
Lock: CW18
Pin: WP033
Ring Set: RDB6850
Rod: P2048 (for 1983–1989 models)

Vehicle Fitments

Yamaha YZ250 1983
Yamaha YZ250 1984
Yamaha YZ250 1985
Yamaha YZ250 1986
Yamaha YZ250 1987

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1983-1987

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.