Namura .060 Over Bore Top End Kit for Yamaha Big Bear 250 2007 2008 2009 72.5mm
Namura .060 Over Bore Top End Kit for Yamaha Big Bear 250 2007 2008 2009 72.5mm
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Top End Kit for Yamaha Big Bear 250
This top end kit is designed for Yamaha Big Bear 250 ATVs from 2007-2009, featuring a .060 over bore size of 72.5mm to restore engine compression and performance.
Overview
This top end kit provides all necessary components to refresh a Yamaha Big Bear 250 engine after a .060 over bore. It includes a high-quality piston, rings, and gaskets tailored for the 2007-2009 model years. The kit delivers a reliable top end kit solution for maintaining peak engine output.
Built For Performance
- Precision-machined piston with .060 over bore (72.5mm diameter)
- Complete ring set for optimal sealing
- Wrist pin and circlips for secure installation
- Full top end gasket set including head, base, and valve cover gaskets
- Engineered for sustained power in 250cc ATV engines
Fits These Machines
- for Yamaha Big Bear 250 (2007-2009)
On-The-Job Use
- Trail riding over rough terrain
- Utility work on farms and ranches
- Hunting and outdoor recreation
- Recreational weekend riding
Specs At A Glance
| Bore Size | 72.5mm |
| Over Bore | .060 |
| Engine Type | Yamaha Big Bear 250 4-stroke |
| Model Years | 2007-2009 |
Good To Know
Q: Will this kit work with a stock cylinder? A: No, this kit is designed for a cylinder that has been bored .060 over; it will not fit a stock bore without machining.
Q: Are installation instructions included? A: General guidance is provided, but professional installation is recommended due to precise tolerances.
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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