Namura NA-40011 Piston Kit 84.45mm for Yamaha
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The Namura NA-40011 Piston Kit 84.45mm is an application-specific engine component for Yamaha YFM450 Grizzly/YFM450 Kodiak. It is designed for the verified year, make and model combinations listed below.
Key Features
- Includes piston, rings, wrist pin and circlips for the listed application
- MOS2-coated skirt helps reduce friction, while the machined crown and anodized dome support heat resistance
- Confirm bore size and oversize specification in the fitment notes before ordering
- Fitment detail: Piston diameter: 84.45 mm
Manufacturer: Namura
Part Number: NA-40011
Vehicle Fitment
| Year | Make | Model | Fitment Notes |
|---|---|---|---|
| 2007-2014 | Yamaha | YFM450 Grizzly | Piston diameter: 84.45 mm |
| 2003-2006 | Yamaha | YFM450 Kodiak | Piston diameter: 84.45 mm |
| 2006-2010 | Yamaha | YFM450 Wolverine | Piston diameter: 84.45 mm |
| 2006-2010 | Yamaha | YXR450 Rhino (UTV) | Piston diameter: 84.45 mm |
Fitment note: Match the year, make, model and any listed specifications to your machine before ordering. Professional installation is recommended for internal engine components.
Shipping & Returns
- Most orders process within 1 business day.
- 30-day returns on new, unused items.
Once your Steel Steeds gear leaves our warehouse, it typically arrives at your doorstep within 2–4 business days, unless otherwise noted. We partner with trusted shipping carriers to ensure your off-road essentials get to you fast and hassle-free. So gear up with confidence—your next big adventure is just around the corner!
Changed your mind? No problem. Most new, unused, and uninstalled items can be returned within 30 days of delivery.
We do not charge a standard restocking fee. Customers are responsible for return shipping unless the item arrived damaged, defective, or incorrect.
Items must be returned in original packaging and in resalable condition.
We are committed to providing quality products and stand behind our items with a warranty. Exact coverage may vary, so please refer to our warranty page for more details!
