Name: Piston Kit 85-87 YZ80 49.50, Wossner 8186D150 Yamaha MX
Brand: Wossner
SKU: 56-W520+150.WO

Piston Kit 85-87 YZ80 49.50, Wossner 8186D150 Yamaha MX

Wossner
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Description

This Wossner piston kit is intended for Yamaha YZ80 models from 1985 to 1987 and features a 49.50 mm bore with an actual piston diameter of 49.45 mm. Forged in Germany, the piston is built for high strength and optimised heat transfer from the combustion chamber to the cylinder walls. Its elliptical shape ensures even load distribution under thermal expansion, reducing localised pressure and helping to prevent piston collapse.

Features

Forged piston construction for enhanced strength
Engineered for efficient heat dissipation
Elliptical design supports uniform thrust load distribution
Manufactured in Germany

Specifications

Bore size: 49.50 mm
Actual piston diameter: 49.45 mm
Display (cm³): 82
Stroke: 45.60 mm
Clearance: 0.05 mm
Compression height: 26.80 mm
Wossner compression ratio: 2-stroke
OEM compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Wossner Piston Part Number: 8186D150
Lock Part Number: CW12
Pin Part Number: WP091
Ring Set Part Number: RSB4950
Alternate Part Number: 56-W520+150.WO

Vehicle Fitments

Yamaha YZ80 1985
Yamaha YZ80 1986
Yamaha YZ80 1987

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 80	1985-1987

Piston Kit 85-87 YZ80 49.50, Wossner 8186D150 Yamaha MX

Wossner
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This Wossner piston kit is intended for Yamaha YZ80 models from 1985 to 1987 and features a 49.50 mm bore... Read more

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SKU: 56-W520+150.WO

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Description

This Wossner piston kit is intended for Yamaha YZ80 models from 1985 to 1987 and features a 49.50 mm bore with an actual piston diameter of 49.45 mm. Forged in Germany, the piston is built for high strength and optimised heat transfer from the combustion chamber to the cylinder walls. Its elliptical shape ensures even load distribution under thermal expansion, reducing localised pressure and helping to prevent piston collapse.

Features

Forged piston construction for enhanced strength
Engineered for efficient heat dissipation
Elliptical design supports uniform thrust load distribution
Manufactured in Germany

Specifications

Bore size: 49.50 mm
Actual piston diameter: 49.45 mm
Display (cm³): 82
Stroke: 45.60 mm
Clearance: 0.05 mm
Compression height: 26.80 mm
Wossner compression ratio: 2-stroke
OEM compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Wossner Piston Part Number: 8186D150
Lock Part Number: CW12
Pin Part Number: WP091
Ring Set Part Number: RSB4950
Alternate Part Number: 56-W520+150.WO

Vehicle Fitments

Yamaha YZ80 1985
Yamaha YZ80 1986
Yamaha YZ80 1987

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 80	1985-1987

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.