Name: Piston Kit 83-87 YZ250 70.00, Wossner 8133D200 Yamaha MX
Brand: Wossner
SKU: 56-W560+200.WO

Piston Kit 83-87 YZ250 70.00, Wossner 8133D200 Yamaha MX

Wossner
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Description

Wossner forged piston kit for Yamaha YZ250 models from 1983 to 1987, featuring a 70.00 mm bore for performance applications requiring a +2.00 mm oversize. The piston is designed to optimise combustion efficiency and mechanical reliability. With an elliptical profile and advanced forging, it ensures uniform stress distribution, effective heat transfer, and reduced risk of piston deformation under high thermal loads. Precision-engineered and made in Germany.

Features

Forged piston construction for enhanced strength and reliability
Engineered for efficient heat transfer from combustion chamber to cylinder wall
Elliptical design for balanced load distribution and minimised thermal stress
Suitable for 2-stroke engine applications
Manufactured in Germany

Specifications

Bore: 70.00 mm
Actual Bore Diameter: 69.94 mm
Compression Height: 36.00 mm
Display Volume: 246 cm³
Stroke: 68.00 mm
Clearance: 0.06 mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 8133D200
Lock P/N: CW18
Pin P/N: WP033
Ring Set P/N: RSB7000 (x2)
Rod P/N: P2048 (for 1983–1989 models)
Alternate Part No.: 56-W560+200.WO

Vehicle Fitments

Yamaha YZ250 (1983–1987)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1983-1987

Piston Kit 83-87 YZ250 70.00, Wossner 8133D200 Yamaha MX

Wossner
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Wossner forged piston kit for Yamaha YZ250 models from 1983 to 1987, featuring a 70.00 mm bore for performance applications... Read more

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SKU: 56-W560+200.WO

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Description

Wossner forged piston kit for Yamaha YZ250 models from 1983 to 1987, featuring a 70.00 mm bore for performance applications requiring a +2.00 mm oversize. The piston is designed to optimise combustion efficiency and mechanical reliability. With an elliptical profile and advanced forging, it ensures uniform stress distribution, effective heat transfer, and reduced risk of piston deformation under high thermal loads. Precision-engineered and made in Germany.

Features

Forged piston construction for enhanced strength and reliability
Engineered for efficient heat transfer from combustion chamber to cylinder wall
Elliptical design for balanced load distribution and minimised thermal stress
Suitable for 2-stroke engine applications
Manufactured in Germany

Specifications

Bore: 70.00 mm
Actual Bore Diameter: 69.94 mm
Compression Height: 36.00 mm
Display Volume: 246 cm³
Stroke: 68.00 mm
Clearance: 0.06 mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 8133D200
Lock P/N: CW18
Pin P/N: WP033
Ring Set P/N: RSB7000 (x2)
Rod P/N: P2048 (for 1983–1989 models)
Alternate Part No.: 56-W560+200.WO

Vehicle Fitments

Yamaha YZ250 (1983–1987)

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.