Name: Piston Kit 86-88 YZ125 57.00, Wossner 8118D100 Yamaha MX
Brand: Wossner
SKU: 56-W559+100.WO

Piston Kit 86-88 YZ125 57.00, Wossner 8118D100 Yamaha MX

Wossner
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Description

This Wossner 57.00mm (+1.00 oversize) forged piston kit is specifically engineered for Yamaha YZ125 two-stroke models from 1986 to 1988. Made in Germany, it features a high-strength forged construction with an elliptical design that enhances structural integrity, promotes even distribution of combustion forces, and improves thermal management. Its design ensures consistent and reliable performance under demanding riding conditions.

Features

Forged piston for high strength and durability
Elliptical design provides uniform bearing surface during heat expansion
Even thrust load distribution helps prevent localised stress and piston collapse
Designed for effective combustion heat transfer to the cylinder walls
Manufactured in Germany

Specifications

Bore: 57.00mm
Actual diameter: 56.94mm
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+100.WO
Wossner Piston Kit No.: 8118D100
Lock: CW16
Pin: WP036
Ring Set: RSB5700

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 57.00, Wossner 8118D100 Yamaha MX

Wossner
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This Wossner 57.00mm (+1.00 oversize) forged piston kit is specifically engineered for Yamaha YZ125 two-stroke models from 1986 to 1988.... Read more

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SKU: 56-W559+100.WO

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Description

This Wossner 57.00mm (+1.00 oversize) forged piston kit is specifically engineered for Yamaha YZ125 two-stroke models from 1986 to 1988. Made in Germany, it features a high-strength forged construction with an elliptical design that enhances structural integrity, promotes even distribution of combustion forces, and improves thermal management. Its design ensures consistent and reliable performance under demanding riding conditions.

Features

Forged piston for high strength and durability
Elliptical design provides uniform bearing surface during heat expansion
Even thrust load distribution helps prevent localised stress and piston collapse
Designed for effective combustion heat transfer to the cylinder walls
Manufactured in Germany

Specifications

Bore: 57.00mm
Actual diameter: 56.94mm
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+100.WO
Wossner Piston Kit No.: 8118D100
Lock: CW16
Pin: WP036
Ring Set: RSB5700

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.