Name: Piston Kit 86-88 YZ125 57.50, Wossner 8118D150 Yamaha MX
Brand: Wossner
SKU: 56-W559+150.WO

Piston Kit 86-88 YZ125 57.50, Wossner 8118D150 Yamaha MX

Wossner
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Description

This Wossner 57.50mm (+1.50 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Produced in Germany, the piston is built using a forged process for enhanced durability and strength. Its elliptical shape helps maintain a consistent bearing surface during thermal expansion, reducing localised stress and evenly distributing thrust loads to prevent piston collapse. The piston also supports efficient heat transfer from the combustion chamber to the cylinder walls, ensuring reliable performance in two-stroke engines.

Features

Forged piston for increased structural strength and durability
Elliptical design provides uniform bearing surface during heat expansion
Minimises localised pressure and evenly distributes thrust loads
Supports efficient combustion heat transfer to cylinder walls
Manufactured in Germany

Specifications

Bore: 57.50mm
Actual diameter: 57.44mm
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+150.WO
Wossner Piston Kit No.: 8118D150
Lock: CW16
Pin: WP036
Ring Set: RSB5750

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 57.50, Wossner 8118D150 Yamaha MX

Wossner
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This Wossner 57.50mm (+1.50 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Produced in... Read more

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SKU: 56-W559+150.WO

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Description

This Wossner 57.50mm (+1.50 oversize) forged piston kit is designed for Yamaha YZ125 models from 1986 to 1988. Produced in Germany, the piston is built using a forged process for enhanced durability and strength. Its elliptical shape helps maintain a consistent bearing surface during thermal expansion, reducing localised stress and evenly distributing thrust loads to prevent piston collapse. The piston also supports efficient heat transfer from the combustion chamber to the cylinder walls, ensuring reliable performance in two-stroke engines.

Features

Forged piston for increased structural strength and durability
Elliptical design provides uniform bearing surface during heat expansion
Minimises localised pressure and evenly distributes thrust loads
Supports efficient combustion heat transfer to cylinder walls
Manufactured in Germany

Specifications

Bore: 57.50mm
Actual diameter: 57.44mm
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+150.WO
Wossner Piston Kit No.: 8118D150
Lock: CW16
Pin: WP036
Ring Set: RSB5750

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.