Name: Piston Kit 92-98 YZ250 69.00, Wossner 8023D100 Yamaha MX
Brand: Wossner
SKU: 56-W677_100_WO

Piston Kit 92-98 YZ250 69.00, Wossner 8023D100 Yamaha MX

Wossner
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Description

This Wossner forged piston kit is designed for Yamaha YZ250 (1992–1998) and WR250 (1992–1999) two-stroke models, offering a +1.00mm oversize fitment. Manufactured in Germany, it combines high-strength materials with an elliptical profile for uniform expansion under operating heat. This design minimises stress concentrations, prevents piston collapse, and ensures effective heat transfer from the combustion chamber to the cylinder wall, supporting consistent engine performance.

Features

Forged piston provides enhanced strength and longevity
Elliptical design promotes even pressure distribution during thermal expansion
Helps prevent piston collapse by reducing localised stress
Optimised for effective combustion heat dissipation
Precision-manufactured in Germany

Specifications

Bore Size: 69.00mm (+1.00mm oversize)
Actual Diameter: 68.94mm
Compression Height: 36.00mm
Stroke: 68.00mm
Displacement: 246 cm³
Piston Clearance: 0.06mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit Part No: 8023D100
Lock: CW18
Pin: WP033
Ring Set: RSB6850 x2
Rod: P2029

Vehicle Fitments

1992 Yamaha WR250
1992 Yamaha YZ250
1993 Yamaha WR250
1993 Yamaha YZ250
1994 Yamaha WR250
1994 Yamaha YZ250
1995 Yamaha WR250
1995 Yamaha YZ250
1996 Yamaha WR250
1996 Yamaha YZ250
1997 Yamaha WR250
1997 Yamaha YZ250
1998 Yamaha WR250
1998 Yamaha YZ250
1999 Yamaha WR250

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1988-1998
YAMAHA	WR 250	1988-1997
YAMAHA	YZ 250	1992-1998
YAMAHA	WR 250	1992-1998
YAMAHA	WR 250	1992-1999
YAMAHA	WR 250	1988-1999

Piston Kit 92-98 YZ250 69.00, Wossner 8023D100 Yamaha MX

Wossner
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Product form

This Wossner forged piston kit is designed for Yamaha YZ250 (1992–1998) and WR250 (1992–1999) two-stroke models, offering a +1.00mm oversize... Read more

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SKU: 56-W677_100_WO

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Description

This Wossner forged piston kit is designed for Yamaha YZ250 (1992–1998) and WR250 (1992–1999) two-stroke models, offering a +1.00mm oversize fitment. Manufactured in Germany, it combines high-strength materials with an elliptical profile for uniform expansion under operating heat. This design minimises stress concentrations, prevents piston collapse, and ensures effective heat transfer from the combustion chamber to the cylinder wall, supporting consistent engine performance.

Features

Forged piston provides enhanced strength and longevity
Elliptical design promotes even pressure distribution during thermal expansion
Helps prevent piston collapse by reducing localised stress
Optimised for effective combustion heat dissipation
Precision-manufactured in Germany

Specifications

Bore Size: 69.00mm (+1.00mm oversize)
Actual Diameter: 68.94mm
Compression Height: 36.00mm
Stroke: 68.00mm
Displacement: 246 cm³
Piston Clearance: 0.06mm
Compression Ratio: 2-stroke (Wossner and OEM)

Cross-Reference OEM Part Numbers

Piston Kit Part No: 8023D100
Lock: CW18
Pin: WP033
Ring Set: RSB6850 x2
Rod: P2029

Vehicle Fitments

1992 Yamaha WR250
1992 Yamaha YZ250
1993 Yamaha WR250
1993 Yamaha YZ250
1994 Yamaha WR250
1994 Yamaha YZ250
1995 Yamaha WR250
1995 Yamaha YZ250
1996 Yamaha WR250
1996 Yamaha YZ250
1997 Yamaha WR250
1997 Yamaha YZ250
1998 Yamaha WR250
1998 Yamaha YZ250
1999 Yamaha WR250

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1988-1998
YAMAHA	WR 250	1988-1997
YAMAHA	YZ 250	1992-1998
YAMAHA	WR 250	1992-1998
YAMAHA	WR 250	1992-1999
YAMAHA	WR 250	1988-1999

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.