PISTON KIT 02-07 KTM EXC450 89, WOSSNER WOSSNER 8581DB
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Wossner 8581DB Piston Kit with an 89.01mm bore. Features Wossner forged pistons known for superior strength and design, engineered for efficient combustion chamber heat transfer to cylinder walls. The elliptical design provides a more uniform bearing surface under piston heat expansion, preventing collapse. Made in Germany. Includes lock CW20, pin WP038, and ring set 890XSY. Specifications: 449 cm³ displacement, 72.00mm hub stroke, 0.04mm clearance, 11.10:1 compression ratio, +7.10cm³ dome volume, 23.50mm compression height.
- SKU
- 56-W178.B
- Brand
- Wossner
- Availability
- In Stock (2)
Fitments (33)
| Make | Model | Year | Notes |
|---|---|---|---|
| BETA | RR 450 | 2005 | — |
| BETA | RR 450 | 2006 | — |
| BETA | RR 450 | 2007 | — |
| BETA | RR 450 | 2008 | — |
| BETA | RR 450 | 2009 | — |
| BETA | RR ENDURO 4T 450 | 2005 | — |
| BETA | RR ENDURO 4T 450 | 2006 | — |
| BETA | RR ENDURO 4T 450 | 2007 | — |
| BETA | RR ENDURO 4T 450 | 2008 | — |
| BETA | RR ENDURO 4T 450 | 2009 | — |
| KTM | 450 EXC | 2003 | 1st Filter (Long) |
| KTM | 450 EXC | 2004 | 1st Filter (Long) |
| KTM | 450 EXC | 2005 | 1st Filter (Long) |
| KTM | 450 EXC | 2006 | 1st Filter (Long) |
| KTM | 450 EXC | 2007 | 1st Filter (Long) |
| KTM | 450 EXC R | 2003 | — |
| KTM | 450 EXC R | 2004 | — |
| KTM | 450 EXC R | 2005 | — |
| KTM | 450 EXC R | 2006 | — |
| KTM | 450 EXC R | 2007 | — |
| KTM | 450 EXC Racing | 2003 | 1st Filter |
| KTM | 450 EXC Racing | 2004 | 1st Filter |
| KTM | 450 EXC Racing | 2005 | 1st Filter |
| KTM | 450 EXC Racing | 2006 | 1st Filter |
| KTM | 450 EXC Racing | 2007 | 1st Filter |
| KTM | 450 XC | 2008 | — |
| KTM | 450 XC | 2009 | — |
| KTM | 450 XC ATV | 2008 | — |
| KTM | 450 XC ATV | 2009 | — |
| POLARIS | OUTLAW MXR 450 | 2008 | — |
| POLARIS | OUTLAW MXR 450 | 2009 | — |
| POLARIS | OUTLAW MXR 450 | 2010 | — |
| POLARIS | OUTLAW MXR 450 | 2011 | — |
- General Product Group
- Engine
- General Product Type
- Pistons & Kits
- General Size
- 89mm
- Variant Id
- 254866
FULL DESCRIPTION
Wossner 8581DB Piston Kit 89.01mm Bore
Upgrade your engine's performance with the Wossner 8581DB Piston Kit. Engineered for superior strength and efficiency, this kit is designed to meet the demands of high-performance engines.
Key Features:
- Wossner forged pistons offer exceptional durability and advanced design.
- Optimized for effective heat transfer from the combustion chamber to the cylinder walls, promoting consistent engine temperatures.
- Features an elliptical design that provides a more uniform bearing surface under heat expansion, preventing piston collapse and ensuring longevity.
- Manufactured to exacting standards in Germany.
Specifications:
- Bore Size: 89.01mm (+0.01mm)
- Displacement: 449 cm³
- Stroke: 72.00mm
- Piston Clearance: 0.04mm
- Compression Ratio: 11.10:1 (OEM Specified)
- Dome Volume: +7.10cm³
- Compression Height: 23.50mm
Included Components:
- Piston
- Lock: CW20
- Pin: WP038
- Ring Set: 890XSY
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
More answers in our FAQ.
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