Name: Piston Kit 01-04 YZF250 77.00, Forged Wossner 8559DA 3-RING, 5NL-11631-10-00
Brand: Wossner
SKU: 56-W4738+00A.WO

Piston Kit 01-04 YZF250 77.00, Forged Wossner 8559DA 3-RING, 5NL-11631-10-00

Wossner
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Description

Wossner forged piston kit designed for Yamaha YZ250F and WR250F models, featuring a 77mm bore and 76.95mm size with a three-ring design. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications.

Features

High-strength forged piston for durability
Optimized heat transfer for improved combustion efficiency
Elliptical design to ensure uniform expansion and reduced localized pressure
Three-ring design for enhanced sealing and performance
Manufactured in Germany

Specifications

Bore: 77mm
Size: 76.95mm
Part Number: 8559DA
Compression Ratio: OEM
OEM Compression Ratio: 12.50:1
Lock Part Number: CW16
Pin Part Number: WP059
Ring Set Part Number: 770XAS
Displacement: 249 cm³
Stroke: 53.6mm
Clearance: 0.04mm
Dome Volume: -4.70 cm³
Compression Height: 22.20mm
Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

5NL-11631-10-00

Vehicle Fitments

Yamaha YZ250F (2001-2004)
Yamaha WR250F (2001-2004)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ F 250	2001-2004
YAMAHA	WR F 250	2001-2004
YAMAHA	YZF 250	2001-2004
YAMAHA	WRF 250	2001-2004

Piston Kit 01-04 YZF250 77.00, Forged Wossner 8559DA 3-RING, 5NL-11631-10-00

Wossner
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Wossner forged piston kit designed for Yamaha YZ250F and WR250F models, featuring a 77mm bore and 76.95mm size with a... Read more

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SKU: 56-W4738+00A.WO

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Description

Wossner forged piston kit designed for Yamaha YZ250F and WR250F models, featuring a 77mm bore and 76.95mm size with a three-ring design. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse, making it ideal for high-performance applications.

Features

High-strength forged piston for durability
Optimized heat transfer for improved combustion efficiency
Elliptical design to ensure uniform expansion and reduced localized pressure
Three-ring design for enhanced sealing and performance
Manufactured in Germany

Specifications

Bore: 77mm
Size: 76.95mm
Part Number: 8559DA
Compression Ratio: OEM
OEM Compression Ratio: 12.50:1
Lock Part Number: CW16
Pin Part Number: WP059
Ring Set Part Number: 770XAS
Displacement: 249 cm³
Stroke: 53.6mm
Clearance: 0.04mm
Dome Volume: -4.70 cm³
Compression Height: 22.20mm
Theoretical Weight: Not specified

Cross-Reference OEM Part Numbers

5NL-11631-10-00

Vehicle Fitments

Yamaha YZ250F (2001-2004)
Yamaha WR250F (2001-2004)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
YAMAHA	YZ F 250	2001-2004
YAMAHA	WR F 250	2001-2004
YAMAHA	YZF 250	2001-2004
YAMAHA	WRF 250	2001-2004

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.