PISTON KIT 02-07 KTM EXC450 89, WOSSNER WOSSNER 8581DB

• Piston Kit: Wossner 8581DB, with an 89.01mm bore (+0.01mm)
• Applications:
  • KTM EXC 450 Racing (2003-2007)
  • Beta RR450 (2005-2009)
  • Polaris Outlaw 450 MXR (2008-2011)
• Features:
  • Wossner forged pistons known for superior strength and design
  • Engineered for efficient combustion chamber heat transfer to cylinder walls
  • Elliptical design for a more uniform bearing surface under piston heat expansion, preventing collapse
• Manufacturing: Made in Germany
• Additional Parts:
  • Lock: CW20
  • Pin: WP038
  • Ring Set: 890XSY
• Specifications:
  • Displacement: 449 cm³
  • Hub Stroke: 72.00mm
  • Clearance: 0.04mm
  • Compression Ratio: OEM specified (11.10:1)
  • Dome Volume: +7.10cm³
  • Compression Height: 23.50mm
  • Theoretical Weight: Not provided

Dispatch Times

Local Stock: Dispatches in < 24 hours

Parts showing as available at our Warehouse in Gorey ship the same business day if ordered before 1pm. 

Supplier Stock: Dispatches in 2-4 Days

Parts showing as available at our Supplier Warehouse are ordered from our supplier and delivered to us before we can dispatch. More info is available on this page under "Stock Availability".

OEM Special Order: Dispatches in 3-10 Days

This website does not have access to live stock levels from our OEM Suppliers. In most cases the parts will be available but in the case of backordered parts we will notify you. We receive parts from Yamaha in 3-4 days, All others including Honda, Suzuki, Kawasaki, Polaris please allow 7-10 days for us to receive the parts. 

Delivery Times

Ireland & Northern Ireland:

1-2 Days using GLS/An Post

Germany, France, Netherlands, Belgium:

3-5 Days using GLS/Fedex

Italy, Spain & Other EU Countries:

4-7 Days using GLS/Fedex