Namura .020 Over Bore Hi Comp Top End Repair Kit for Yamaha Banshee 350 64.5mm
Namura .020 Over Bore Hi Comp Top End Repair Kit for Yamaha Banshee 350 64.5mm
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High Compression Top End Repair Kit (.020 Over) for Yamaha Banshee 350
This Namura top end repair kit includes piston, rings, wrist pin, and gaskets for a 64.5mm bore (0.020 oversize) and provides a high compression rebuild for Yamaha Banshee 350 engines.
Overview
This top end repair kit from Namura is designed for Yamaha Banshee 350 models requiring a .020 over bore. The kit contains everything needed to refresh the cylinder: a high compression piston, rings, wrist pin, and top end gasket set. It restores lost power and compression on high-mileage engines.
Built For Performance
- High compression piston design increases power output
- 64.5mm bore size (0.020 oversize) cleans up worn cylinders
- Includes premium piston rings for proper sealing
- Complete gasket set ensures a leak-free assembly
- Manufactured by Namura for reliable aftermarket performance
Fits These Machines
- for Yamaha Banshee 350
On-The-Job Use
- Rebuilding worn top end on Banshee 350 ATVs
- Restoring lost compression for better throttle response
- Preparing engine for high-performance riding or racing
- Replacing a damaged piston after a seizure
Specs At A Glance
| Bore Size | 64.5mm |
| Oversize | .020 in (0.50mm) |
| Compression | High (approx. 130-150 psi typical) |
| Kit Includes | Piston, Rings, Wrist Pin, Circlips, Gaskets |
Good To Know
Q: Does this kit include the cylinder gasket for the base? A: Yes, the top end gasket set includes base gasket, head gasket, and exhaust gaskets for a complete rebuild.
Q: Do I need to bore my cylinder to use this .020 over piston? A: Yes, the cylinder must be bored to 64.5mm to accept the oversize piston; a proper hone is also recommended.
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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