PISTON KIT YFZ450/R/X 95.00, WISECO 4865M09500 YAMAHA MX

The Wiseco 4865M09500 piston kit features a 95.00mm bore with a 12:1 compression ratio and is compatible with a range of Yamaha YFZ450 models, including the YFZ450R and YFZ450X. This forged high-compression piston is constructed from high-silicon aluminum alloy, offering strength, durability, and performance enhancements.

Features

• Forged piston made from high-silicon aluminum alloy
• High-compression design for increased horsepower and torque
• Includes piston, ring set, wire pin locks, and piston pin
• Engineered for durability and longevity
• Innovative forging and skirt design for maximum performance

Specifications

• Bore: 95.00 mm
• Actual Bore Diameter: 94.95 mm
• Compression Ratio: 12:1
• Construction: Forged
• Part No.: 56-W4865+00A_WI

Cross-Reference OEM Part Numbers

• Piston: 4865M09500

Vehicle Fitments

• Yamaha YFZ450 2004–2013
• Yamaha YFZ450 SE 2007–2008
• Yamaha YFZ450 Bill Balance Edition 2006–2007
• Yamaha YFZ450R 2009–2013
• Yamaha YFZ450R SE 2009–2013
• Yamaha YFZ450X 2011
• Yamaha YFZ450X SE 2011

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