Name: Piston Kit 1989 YZ125 57.00, Wossner 8131D100 Yamaha MX
Brand: Wossner
SKU: 56-W582+100.WO

Piston Kit 1989 YZ125 57.00, Wossner 8131D100 Yamaha MX

Wossner
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Description

Wossner Forged Piston Kit 57.00mm Bore – Yamaha YZ125 1989 (8131D100 +1.00)
This Wossner forged piston kit is designed for the 1989 Yamaha YZ125 and features a +1.00mm oversize bore (actual 56.94mm). Specifically developed for 2-stroke engines, the piston’s forged construction delivers high strength and excellent heat dissipation. The elliptical design promotes uniform thrust load distribution during heat expansion, preventing localised pressure points and reducing the likelihood of piston failure. Precision-manufactured in Germany.

Features

Forged aluminium piston for superior durability and strength
Optimised for efficient heat transfer from combustion to cylinder walls
Elliptically shaped to ensure even pressure distribution under heat expansion
Designed for use in 2-stroke engines
Made in Germany

Specifications

Bore Size: 57.00mm (+1.00 oversize)
Actual Bore: 56.94mm
Compression Height: 28.00mm
Clearance: 0.06mm
Stroke: 50.00mm
Displacement: 123 cm³
Wossner Compression Ratio: 2-stroke
OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

Wossner Piston: 8131D100
Ring Set: RSB5700
Lock: CW16
Pin: WP036
Rod: P2047
Internal Reference: 56-W582+100.WO

Vehicle Fitments

1989 Yamaha YZ125

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 125	1989

Piston Kit 1989 YZ125 57.00, Wossner 8131D100 Yamaha MX

Wossner
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Wossner Forged Piston Kit 57.00mm Bore – Yamaha YZ125 1989 (8131D100 +1.00) This Wossner forged piston kit is designed for... Read more

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SKU: 56-W582+100.WO

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Description

Wossner Forged Piston Kit 57.00mm Bore – Yamaha YZ125 1989 (8131D100 +1.00)
This Wossner forged piston kit is designed for the 1989 Yamaha YZ125 and features a +1.00mm oversize bore (actual 56.94mm). Specifically developed for 2-stroke engines, the piston’s forged construction delivers high strength and excellent heat dissipation. The elliptical design promotes uniform thrust load distribution during heat expansion, preventing localised pressure points and reducing the likelihood of piston failure. Precision-manufactured in Germany.

Features

Forged aluminium piston for superior durability and strength
Optimised for efficient heat transfer from combustion to cylinder walls
Elliptically shaped to ensure even pressure distribution under heat expansion
Designed for use in 2-stroke engines
Made in Germany

Specifications

Bore Size: 57.00mm (+1.00 oversize)
Actual Bore: 56.94mm
Compression Height: 28.00mm
Clearance: 0.06mm
Stroke: 50.00mm
Displacement: 123 cm³
Wossner Compression Ratio: 2-stroke
OEM Compression Ratio: 2-stroke

Cross-Reference OEM Part Numbers

Wossner Piston: 8131D100
Ring Set: RSB5700
Lock: CW16
Pin: WP036
Rod: P2047
Internal Reference: 56-W582+100.WO

Vehicle Fitments

1989 Yamaha YZ125

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 125	1989

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.