2 Sets of Namura .040 Over Bore Piston Rings for Polaris 850 ATV's 88mm
2 Sets of Namura .040 Over Bore Piston Rings for Polaris 850 ATV's 88mm
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2 Sets of Namura .040 Over Bore Piston Rings for Polaris 850 ATV
These two sets of Namura .040 over bore piston rings are designed for Polaris 850 ATV engines with an 88mm bore size.
Overview
The 2 Sets of Namura .040 Over Bore Piston Rings provide a reliable sealing solution for Polaris 850 ATV engines. These piston rings are intended for engines that have been bored 0.040 over stock. They offer consistent compression and oil control for improved performance.
Built For Performance
- Namura brand piston rings for quality and fit
- 0.040 over bore size increases displacement slightly
- Ductile iron construction for durability
- Precision-machined for proper cylinder sealing
- Sold as two sets for convenience
On-The-Job Use
- Engine rebuilds for Polaris 850 ATVs
- High-performance upgrades after boring
- Routine maintenance on four-stroke engines
Specs At A Glance
| Bore Size | 88mm |
| Over Bore | .040 |
| Quantity | 2 Sets |
| Brand | Namura |
Good To Know
Q: Are these rings pre-gapped? A: No, the rings require gap measurement and adjustment during installation to match your cylinder bore.
Q: Do I need to hone the cylinder before installation? A: Yes, a proper cross-hatch hone is recommended to ensure ring seating and oil retention.
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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