Namura Standard Bore Piston Rings for Polaris Sportsman 450 400 Ranger 87.9mm
Namura Standard Bore Piston Rings for Polaris Sportsman 450 400 Ranger 87.9mm
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Standard Bore Piston Rings for Polaris
These standard bore piston rings for Polaris are replacement compression and oil control rings designed for an 87.9mm bore, fitting Sportsman 450, 400, and Ranger models.
Overview
The standard bore piston rings for Polaris restore proper cylinder compression for engine efficiency and reduced oil consumption. Technicians choose these standard bore piston rings for Polaris to maintain power during routine engine service. Each set of standard bore piston rings for Polaris is engineered for durability under high load conditions.
Built For Performance
- Precision machined ring faces
- Heat treated for increased longevity
- Optimal sealing against cylinder walls
- Consistent tension across the stroke
- Compatible with standard bore sleeves
Fits These Machines
- for Polaris Sportsman 450
- for Polaris Sportsman 400
- for Polaris Ranger
On-The-Job Use
- Rebuilding an engine with low compression
- Repairing excessive engine oil burning
- Standard maintenance for high hour engines
Specs At A Glance
| Bore Size | 87.9mm |
Good To Know
Q: Do these rings require a cylinder hone? A: Yes, a fresh crosshatch pattern on the cylinder wall is necessary to help the new rings seat correctly.
Q: How do I check the ring end gap? A: Place the ring in the cylinder and use a feeler gauge to measure the gap, ensuring it meets the manufacturer specifications.
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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