Namura .060 Over Bore Piston Rings for Polaris Big Boss 250 1989-1993 73.5mm
Namura .060 Over Bore Piston Rings for Polaris Big Boss 250 1989-1993 73.5mm
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.060 Over Bore Piston Rings for for Namura
These .060 over bore piston rings for for Namura seal the 73.5mm bores in Polaris Big Boss 250 engines during top end maintenance.
Overview
The .060 over bore piston rings for for Namura provide the essential seal required to regain power in machined cylinder blocks. By using .060 over bore piston rings for for Namura, engine builders achieve reliable compression levels after bore refurbishment. These .060 over bore piston rings for for Namura are built for demanding environments where performance is required.
Built For Performance
- Precision fit for 73.5mm bore
- Durable long-wear composition
- Maintains critical ring seal
- Optimized tension for two-stroke operation
- Engineered for thermal expansion
Fits These Machines
- for Polaris Big Boss 250 1989-1993
On-The-Job Use
- High-hour engine maintenance
- Restoring compression to oversized cylinders
- Essential component for top-end rebuilds
Specs At A Glance
| Bore Size | 73.5mm |
| Over Size | .060 |
Good To Know
Q: Can these work on stock 72mm bores? A: No, these will not seal correctly on non-machined cylinders.
Q: How do I ensure proper seating? A: Follow a standard break-in procedure after installation.
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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