Name: Piston Kit 00-06 KTM250 66.40, Wossner 8090DB Forged
Brand: Wossner
SKU: 56-W774.B.WO

Piston Kit 00-06 KTM250 66.40, Wossner 8090DB Forged

Wossner
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Description

This Wossner piston kit with a 66.41mm bore (+0.01mm oversize) is precision-engineered for KTM SX250 models from 2000 to 2002. Built from forged material, it provides enhanced strength, heat resistance, and consistent performance for demanding 2-stroke applications.

Features

Forged piston ensures high strength and durability
Designed for optimal combustion chamber heat transfer to the cylinder wall
Elliptical profile offers consistent bearing surface during expansion
Minimises localised stress to prevent piston collapse under high load
Manufactured in Germany to precise engineering standards

Specifications

Bore: 66.41 mm
Actual piston size: 66.35 mm
Stroke: 72.00 mm
Display volume: 249 cm³
Clearance: 0.06 mm
Compression ratio: 2-stroke (Wossner and OEM)
Compression height: 38.00 mm

Cross-Reference OEM Part Numbers

Piston Kit: 8090DB
Lock: CW18
Pin: WP033
Ring Set: RSB6640
Part No: 56-W774.B.WO

Vehicle Fitments

KTM SX250 2000
KTM SX250 2001
KTM SX250 2002

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
KTM	SX 250	2000-2002
KTM	MXC 250	2000-2005
KTM	EXC 250	2000-2006
KTM	SXS 250	2000-2002

Piston Kit 00-06 KTM250 66.40, Wossner 8090DB Forged

Wossner
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This Wossner piston kit with a 66.41mm bore (+0.01mm oversize) is precision-engineered for KTM SX250 models from 2000 to 2002.... Read more

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SKU: 56-W774.B.WO

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Description

This Wossner piston kit with a 66.41mm bore (+0.01mm oversize) is precision-engineered for KTM SX250 models from 2000 to 2002. Built from forged material, it provides enhanced strength, heat resistance, and consistent performance for demanding 2-stroke applications.

Features

Forged piston ensures high strength and durability
Designed for optimal combustion chamber heat transfer to the cylinder wall
Elliptical profile offers consistent bearing surface during expansion
Minimises localised stress to prevent piston collapse under high load
Manufactured in Germany to precise engineering standards

Specifications

Bore: 66.41 mm
Actual piston size: 66.35 mm
Stroke: 72.00 mm
Display volume: 249 cm³
Clearance: 0.06 mm
Compression ratio: 2-stroke (Wossner and OEM)
Compression height: 38.00 mm

Cross-Reference OEM Part Numbers

Piston Kit: 8090DB
Lock: CW18
Pin: WP033
Ring Set: RSB6640
Part No: 56-W774.B.WO

Vehicle Fitments

KTM SX250 2000
KTM SX250 2001
KTM SX250 2002

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
KTM	SX 250	2000-2002
KTM	MXC 250	2000-2005
KTM	EXC 250	2000-2006
KTM	SXS 250	2000-2002

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.