Name: Piston Kit 80-82 YZ IT465 85.0, Wossner 8265DA Yamaha Kit
Brand: Wossner
SKU: 56-W551.A.WO

Piston Kit 80-82 YZ IT465 85.0, Wossner 8265DA Yamaha Kit

Wossner
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Description

This Wossner piston kit features an 85mm bore size (84.92mm actual) and is designed for Yamaha YZ465 (1981–1982) and IT465 (1980–1981) models. Forged in Germany, the piston is built for durability and thermal performance. The elliptical design ensures even load distribution under heat expansion, reducing localised stress and preventing piston collapse.

Features

Forged construction for enhanced durability
Elliptical shape provides uniform bearing surface under expansion
Designed for efficient heat transfer from combustion chamber to cylinder walls
Manufactured in Germany

Specifications

Bore Size: 85mm (84.92mm)
Display: 465 cm³
Stroke: 82.00 mm
Clearance: 0.08 mm
Compression Height: 40.00 mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit: 8265DA
Lock: CW18
Pin: WP042
Ring Set: RSC8500 x2
Part No.: 56-W551.A.WO

Vehicle Fitments

Yamaha YZ465 1981
Yamaha YZ465 1982
Yamaha IT465 1980
Yamaha IT465 1981

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 465	1980-1981
YAMAHA	IT 465	1981-1982

Piston Kit 80-82 YZ IT465 85.0, Wossner 8265DA Yamaha Kit

Wossner
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This Wossner piston kit features an 85mm bore size (84.92mm actual) and is designed for Yamaha YZ465 (1981–1982) and IT465... Read more

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SKU: 56-W551.A.WO

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Description

This Wossner piston kit features an 85mm bore size (84.92mm actual) and is designed for Yamaha YZ465 (1981–1982) and IT465 (1980–1981) models. Forged in Germany, the piston is built for durability and thermal performance. The elliptical design ensures even load distribution under heat expansion, reducing localised stress and preventing piston collapse.

Features

Forged construction for enhanced durability
Elliptical shape provides uniform bearing surface under expansion
Designed for efficient heat transfer from combustion chamber to cylinder walls
Manufactured in Germany

Specifications

Bore Size: 85mm (84.92mm)
Display: 465 cm³
Stroke: 82.00 mm
Clearance: 0.08 mm
Compression Height: 40.00 mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit: 8265DA
Lock: CW18
Pin: WP042
Ring Set: RSC8500 x2
Part No.: 56-W551.A.WO

Vehicle Fitments

Yamaha YZ465 1981
Yamaha YZ465 1982
Yamaha IT465 1980
Yamaha IT465 1981

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 465	1980-1981
YAMAHA	IT 465	1981-1982

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.