Name: Piston Kit 83-87 YZ250 69.00, Wossner 8133D100 Yamaha MX
Brand: Wossner
SKU: 56-W560+100.WO

Piston Kit 83-87 YZ250 69.00, Wossner 8133D100 Yamaha MX

Wossner
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Description

The Wossner 8133D100 piston kit features a 69mm bore (68.94mm actual) and is designed for Yamaha YZ250 models from 1983 to 1987. Manufactured in Germany, this forged piston offers excellent strength and optimised heat dissipation, thanks to its elliptical shape that promotes uniform load distribution and prevents piston collapse during thermal expansion.

Features

Forged piston design for enhanced durability and strength
Elliptical profile for balanced load distribution under heat expansion
Optimised heat transfer from combustion chamber to cylinder walls
Engineered for two-stroke engines
Manufactured in Germany

Specifications

Bore size: 69mm (actual: 68.94mm)
Display displacement: 246 cm³
Stroke: 68.00 mm
Piston-to-wall clearance: 0.06 mm
Compression height: 36.00 mm
Compression ratio (Wossner & OEM): 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit: 8133D100
Lock: CW18
Pin: WP033
Ring Set: RSB6900 x 2
Rod: P2048 (for 1983–1989 models)

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 69.00, Wossner 8133D100 Yamaha MX

Wossner
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The Wossner 8133D100 piston kit features a 69mm bore (68.94mm actual) and is designed for Yamaha YZ250 models from 1983... Read more

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SKU: 56-W560+100.WO

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Description

The Wossner 8133D100 piston kit features a 69mm bore (68.94mm actual) and is designed for Yamaha YZ250 models from 1983 to 1987. Manufactured in Germany, this forged piston offers excellent strength and optimised heat dissipation, thanks to its elliptical shape that promotes uniform load distribution and prevents piston collapse during thermal expansion.

Features

Forged piston design for enhanced durability and strength
Elliptical profile for balanced load distribution under heat expansion
Optimised heat transfer from combustion chamber to cylinder walls
Engineered for two-stroke engines
Manufactured in Germany

Specifications

Bore size: 69mm (actual: 68.94mm)
Display displacement: 246 cm³
Stroke: 68.00 mm
Piston-to-wall clearance: 0.06 mm
Compression height: 36.00 mm
Compression ratio (Wossner & OEM): 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit: 8133D100
Lock: CW18
Pin: WP033
Ring Set: RSB6900 x 2
Rod: P2048 (for 1983–1989 models)

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.