Name: Piston Kit KTM 400 76-81 83.00, Wossner 8293D100 KTM 390
Brand: Wossner
SKU: 56-W9877.100.WO

Piston Kit KTM 400 76-81 83.00, Wossner 8293D100 KTM 390

Wossner
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Description

This Wossner 83mm bore forged piston kit (part number 8293D100, +1mm oversize) is engineered for enhanced durability and thermal efficiency, making it suitable for high-performance applications. Designed with an elliptical profile for optimal load distribution under heat expansion, it minimises piston wear and collapse. Manufactured in Germany, it includes precise components tailored for both KTM and Yamaha models.

Features

Forged piston designed for increased strength and reliability
Superior heat transfer for improved combustion efficiency
Elliptical design distributes thrust loads uniformly
Made in Germany

Specifications

Bore: 83mm
Bore Size: 82.90mm
Compression Ratio: 13:1 (Yamaha YZF R6 4-Stroke)
Compression Height: 37.70mm
Clearance: 0.10mm
Stroke: 74.00mm
Displacement: 389cm³ (KTM 390), 355cm³ (KTM 400)
Clip Part Number: CW18
Piston Pin: WP0042
Ring Set: RSC8300

Cross-Reference OEM Part Numbers

56-W9877.100.WO

Vehicle Fitments

KTM GS / MC 390 / 400 (1976–1981)
Yamaha YZF R6 (2006–2011, 4-Stroke)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
KTM	GS 300	1976-1981
KTM	GS 400	1976-1981

Piston Kit KTM 400 76-81 83.00, Wossner 8293D100 KTM 390

Wossner
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This Wossner 83mm bore forged piston kit (part number 8293D100, +1mm oversize) is engineered for enhanced durability and thermal efficiency,... Read more

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SKU: 56-W9877.100.WO

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Description

This Wossner 83mm bore forged piston kit (part number 8293D100, +1mm oversize) is engineered for enhanced durability and thermal efficiency, making it suitable for high-performance applications. Designed with an elliptical profile for optimal load distribution under heat expansion, it minimises piston wear and collapse. Manufactured in Germany, it includes precise components tailored for both KTM and Yamaha models.

Features

Forged piston designed for increased strength and reliability
Superior heat transfer for improved combustion efficiency
Elliptical design distributes thrust loads uniformly
Made in Germany

Specifications

Bore: 83mm
Bore Size: 82.90mm
Compression Ratio: 13:1 (Yamaha YZF R6 4-Stroke)
Compression Height: 37.70mm
Clearance: 0.10mm
Stroke: 74.00mm
Displacement: 389cm³ (KTM 390), 355cm³ (KTM 400)
Clip Part Number: CW18
Piston Pin: WP0042
Ring Set: RSC8300

Cross-Reference OEM Part Numbers

56-W9877.100.WO

Vehicle Fitments

KTM GS / MC 390 / 400 (1976–1981)
Yamaha YZF R6 (2006–2011, 4-Stroke)

Vehicle Compatibility

Please check the exact model and year before ordering.

Manufacturer	Model	Years
KTM	GS 300	1976-1981
KTM	GS 400	1976-1981

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.