Name: Piston Kit 88-91 YZ250 68.50, Wossner 8134D050 Yamaha MX
Brand: Wossner
SKU: 56-W605+050.WO

Piston Kit 88-91 YZ250 68.50, Wossner 8134D050 Yamaha MX

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Description

Wossner Forged Piston Kit 68.50mm 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 68.50 mm and a piston diameter of 68.44 mm (+0.50 mm oversize), it is crafted for 2-stroke engine setups requiring improved strength and thermal efficiency. The forged aluminium design and elliptical geometry ensure even load distribution and effective heat transfer, reducing wear and the risk of piston failure. Manufactured in Germany for dependable performance.

Features

Forged construction for superior durability and strength
Optimised design for combustion chamber heat transfer
Elliptical shape promotes balanced load distribution under thermal expansion
Precision-engineered in Germany

Specifications

Bore Size: 68.50 mm
Piston Diameter: 68.44 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: 8134D050
Lock: CW18
Pin: WP033
Ring Set: RSB68500 x 2

Vehicle Fitments

Yamaha YZ250 (1988–1991)
Yamaha WR250 (1988–1991)

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 68.50, Wossner 8134D050 Yamaha MX

Wossner
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Wossner Forged Piston Kit 68.50mm Bore – Yamaha YZ250 / WR250 (1988–1991) This Wossner forged piston kit is designed for... Read more

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SKU: 56-W605+050.WO

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Description

Wossner Forged Piston Kit 68.50mm 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 68.50 mm and a piston diameter of 68.44 mm (+0.50 mm oversize), it is crafted for 2-stroke engine setups requiring improved strength and thermal efficiency. The forged aluminium design and elliptical geometry ensure even load distribution and effective heat transfer, reducing wear and the risk of piston failure. Manufactured in Germany for dependable performance.

Features

Forged construction for superior durability and strength
Optimised design for combustion chamber heat transfer
Elliptical shape promotes balanced load distribution under thermal expansion
Precision-engineered in Germany

Specifications

Bore Size: 68.50 mm
Piston Diameter: 68.44 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: 8134D050
Lock: CW18
Pin: WP033
Ring Set: RSB68500 x 2

Vehicle Fitments

Yamaha YZ250 (1988–1991)
Yamaha WR250 (1988–1991)

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.