Name: Piston Kit 86-88 YZ125 56.75, Wossner 8118D075 Yamaha MX
Brand: Wossner
SKU: 56-W559+075.WO

Piston Kit 86-88 YZ125 56.75, Wossner 8118D075 Yamaha MX

Wossner
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Description

This Wossner 56.75mm (+0.75 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Featuring a forged build and elliptical design, the piston is engineered for thermal expansion control, even thrust load distribution, and reliable performance in two-stroke engines. Manufactured in Germany, it ensures efficient heat transfer from the combustion chamber to the cylinder walls under demanding conditions.

Features

Forged piston construction for enhanced strength and durability
Elliptical design provides consistent bearing surface under thermal expansion
Even distribution of thrust loads minimises localised stress and prevents piston collapse
Optimised for efficient heat transfer from combustion chamber to cylinder walls
Manufactured in Germany

Specifications

Bore: 56.75mm
Actual diameter: 56.69mm
Displacement: 123 cm³
Stroke: 50.00mm
Clearance: 0.06mm
Compression height: 30.00mm
Compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 56-W559+075.WO
Wossner Piston Kit No.: 8118D075
Lock: CW16
Pin: WP036
Ring Set: RSB5675

Vehicle Fitments

Yamaha YZ125 1986
Yamaha YZ125 1987
Yamaha YZ125 1988

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 125	1986-1988

Piston Kit 86-88 YZ125 56.75, Wossner 8118D075 Yamaha MX

Wossner
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This Wossner 56.75mm (+0.75 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Featuring a... Read more

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SKU: 56-W559+075.WO

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Description

This Wossner 56.75mm (+0.75 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Featuring a forged build and elliptical design, the piston is engineered for thermal expansion control, even thrust load distribution, and reliable performance in two-stroke engines. Manufactured in Germany, it ensures efficient heat transfer from the combustion chamber to the cylinder walls under demanding conditions.

Features

Forged piston construction for enhanced strength and durability
Elliptical design provides consistent bearing surface under thermal expansion
Even distribution of thrust loads minimises localised stress and prevents piston collapse
Optimised for efficient heat transfer from combustion chamber to cylinder walls
Manufactured in Germany

Specifications

Bore: 56.75mm
Actual diameter: 56.69mm
Displacement: 123 cm³
Stroke: 50.00mm
Clearance: 0.06mm
Compression height: 30.00mm
Compression ratio: 2-stroke

Cross-Reference OEM Part Numbers

Piston Kit Part No.: 56-W559+075.WO
Wossner Piston Kit No.: 8118D075
Lock: CW16
Pin: WP036
Ring Set: RSB5675

Vehicle Fitments

Yamaha YZ125 1986
Yamaha YZ125 1987
Yamaha YZ125 1988

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 125	1986-1988

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.