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

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

Wossner
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Description

This Wossner piston kit features a 66.40mm bore in standard size, designed for KTM SX250 models from 2000 to 2002. Manufactured with forged construction, it delivers exceptional strength and heat management tailored to high-performance 2-stroke engines.

Features

Forged piston construction offers superior strength and durability
Optimised for effective heat transfer to the cylinder wall from the combustion chamber
Elliptical design maintains a consistent bearing surface under thermal expansion
Distributes thrust loads evenly to minimise localised stress and prevent piston collapse
Made in Germany with high-precision manufacturing

Specifications

Bore: 66.40 mm
Actual piston size: 66.34 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: 8090DA
Lock: CW18
Pin: WP033
Ring Set: RSB6640
Part No: 56-W774.A.WO
774M06640

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 8090DA Forged

Wossner
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This Wossner piston kit features a 66.40mm bore in standard size, designed for KTM SX250 models from 2000 to 2002.... Read more

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SKU: 56-W774.A.WO

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Description

This Wossner piston kit features a 66.40mm bore in standard size, designed for KTM SX250 models from 2000 to 2002. Manufactured with forged construction, it delivers exceptional strength and heat management tailored to high-performance 2-stroke engines.

Features

Forged piston construction offers superior strength and durability
Optimised for effective heat transfer to the cylinder wall from the combustion chamber
Elliptical design maintains a consistent bearing surface under thermal expansion
Distributes thrust loads evenly to minimise localised stress and prevent piston collapse
Made in Germany with high-precision manufacturing

Specifications

Bore: 66.40 mm
Actual piston size: 66.34 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: 8090DA
Lock: CW18
Pin: WP033
Ring Set: RSB6640
Part No: 56-W774.A.WO
774M06640

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.