Name: Piston Kit 88-91 YZ250 69.00, Wossner 8134D100 Yamaha MX
Brand: Wossner
SKU: 56-W605+100.WO

Piston Kit 88-91 YZ250 69.00, Wossner 8134D100 Yamaha MX

Wossner
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Description

Wossner Forged Piston Kit 69.00mm Bore – Yamaha YZ250 / WR250 (1988–1991)
This Wossner forged piston kit is designed for Yamaha YZ250 and WR250 models from 1988 to 1991. With a bore size of 69.00 mm and a piston diameter of 68.94 mm (+1.00 mm oversize), it is built for high-performance 2-stroke applications. The forged aluminium construction ensures high strength and durability, while the elliptical profile allows even load distribution during thermal expansion, improving reliability and reducing wear. Manufactured in Germany for precision and consistency.

Features

Forged piston construction for maximum strength and longevity
Designed to promote optimal heat dissipation from the combustion chamber
Elliptical design distributes thrust loads evenly, minimising stress concentrations
Precision-engineered and manufactured in Germany

Specifications

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

Cross-Reference Wossner Part Numbers

Piston Kit: 8134D100
Lock: CW18
Pin: WP033
Ring Set: RSB6900 x 2

Vehicle Fitments

1988 Yamaha YZ250
1988 Yamaha WR250
1989 Yamaha YZ250
1989 Yamaha WR250
1990 Yamaha YZ250
1990 Yamaha WR250
1991 Yamaha YZ250
1991 Yamaha WR250

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1988-1991
YAMAHA	WR 250	1991
YAMAHA	WR 250	1988-1991

Piston Kit 88-91 YZ250 69.00, Wossner 8134D100 Yamaha MX

Wossner
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Wossner Forged Piston Kit 69.00mm Bore – Yamaha YZ250 / WR250 (1988–1991) This Wossner forged piston kit is designed for... Read more

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SKU: 56-W605+100.WO

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Description

Wossner Forged Piston Kit 69.00mm Bore – Yamaha YZ250 / WR250 (1988–1991)
This Wossner forged piston kit is designed for Yamaha YZ250 and WR250 models from 1988 to 1991. With a bore size of 69.00 mm and a piston diameter of 68.94 mm (+1.00 mm oversize), it is built for high-performance 2-stroke applications. The forged aluminium construction ensures high strength and durability, while the elliptical profile allows even load distribution during thermal expansion, improving reliability and reducing wear. Manufactured in Germany for precision and consistency.

Features

Forged piston construction for maximum strength and longevity
Designed to promote optimal heat dissipation from the combustion chamber
Elliptical design distributes thrust loads evenly, minimising stress concentrations
Precision-engineered and manufactured in Germany

Specifications

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

Cross-Reference Wossner Part Numbers

Piston Kit: 8134D100
Lock: CW18
Pin: WP033
Ring Set: RSB6900 x 2

Vehicle Fitments

1988 Yamaha YZ250
1988 Yamaha WR250
1989 Yamaha YZ250
1989 Yamaha WR250
1990 Yamaha YZ250
1990 Yamaha WR250
1991 Yamaha YZ250
1991 Yamaha WR250

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ 250	1988-1991
YAMAHA	WR 250	1991
YAMAHA	WR 250	1988-1991

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.