Namura .040 Over Bore Top End Repair Kit for Polaris 300 2-Stroke ATV's 75.5mm
Namura .040 Over Bore Top End Repair Kit for Polaris 300 2-Stroke ATV's 75.5mm
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Top End Repair Kit (0.040 Over Bore 75.5mm) for Polaris 300 2-Stroke ATVs
This aftermarket top end repair kit includes a piston, rings, pin, and gaskets for a 0.040 over bore (75.5mm) on Polaris 300 2-stroke ATV engines.
Overview
This top end repair kit is designed to rebuild the cylinder of your Polaris 300 2-stroke ATV. The kit includes all necessary components for a 0.040 over bore, restoring compression and performance. It is suitable for a variety of Polaris 300 models.
Built For Performance
- High-silicon aluminum piston for lightweight durability
- Precision-ground ring set for optimal seal
- Includes wrist pin and circlips for secure assembly
- Complete gasket set for a leak-free installation
- Matched components ensure proper clearances
- Designed for 0.040 over bore (75.5mm) for worn cylinders
On-The-Job Use
- Engine top end rebuild after wear or damage
- Restoring lost compression and power
- Preventive maintenance during full engine overhaul
- Trail riding and recreational use
Specs At A Glance
| Bore Size | 75.5mm |
| Overbore | 0.040 in (1.016mm) |
| Engine Type | Polaris 300 2-Stroke |
Good To Know
Q: Is this kit intended for a standard bore? A: No, this kit is for a 0.040 over bore only. You must bore your cylinder to 75.5mm for proper fit.
Q: Does the kit include a cylinder? A: No, the kit includes only the piston, rings, pin, and gaskets. The cylinder must be purchased separately or reused if serviceable.
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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