Namura .020 Over Bore Piston Kit for Yamaha Big Bear 250 2007 2008 2009 71.5mm
Namura .020 Over Bore Piston Kit for Yamaha Big Bear 250 2007 2008 2009 71.5mm
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Namura .020 Over Bore Piston Kit for Yamaha Big Bear 250
This .020 over bore piston kit is a direct replacement for the original piston in Yamaha Big Bear 250 engines, restoring compression and performance.
Overview
The Namura .020 over bore piston kit is designed for Yamaha Big Bear 250 ATVs from 2007 to 2009. This piston kit increases displacement slightly while refreshing worn cylinder components. It is an ideal choice for rebuilding your Big Bear 250 engine with a reliable piston kit.
Built For Performance
- Oversized 71.5mm piston for increased displacement
- .020 over bore for a tighter fit and improved compression
- Precision-machined from high-silicon aluminum alloy
- Includes piston rings and wrist pin
- Engineered to meet OEM specifications
Fits These Machines
- for Yamaha Big Bear 250 2007
- for Yamaha Big Bear 250 2008
- for Yamaha Big Bear 250 2009
On-The-Job Use
- Trail riding
- Utility work on farms and ranches
- Hunting and outdoor recreation
- Restoring engine power in older ATVs
Specs At A Glance
| Bore Size | 71.5mm |
| Oversize | .020 |
| Make | Yamaha |
| Model | Big Bear 250 |
| Years | 2007-2009 |
Good To Know
Q: Does this piston kit come with rings? A: Yes, the kit includes piston rings and wrist pin for a complete installation.
Q: Is a rebore required for this oversize piston? A: Yes, the cylinder must be bored to .020 oversize to accommodate the 71.5mm piston.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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