SPI Standard Bore Piston Ring for Polaris 850 Sleds fits Most 2019-2022 - 85mm
SPI Standard Bore Piston Ring for Polaris 850 Sleds fits Most 2019-2022 - 85mm
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Standard Bore Piston Ring for Polaris
This SPI standard bore piston ring serves as a high-quality replacement for Polaris 850 snowmobile engines to restore compression and seal the combustion chamber with an 85mm diameter.
Overview
The standard bore piston ring is designed for Polaris 850 sleds to ensure proper engine sealing. This SPI standard bore piston ring helps maintain optimal cylinder pressure during demanding operation. Professional technicians use this standard bore piston ring for routine engine rebuilds and maintenance.
Built For Performance
- Precision manufactured for consistent cylinder wall contact
- Engineered to withstand high combustion temperatures
- Optimized heat dissipation for longer service life
- Chrome plated face for reduced wear resistance
Fits These Machines
- for Polaris 850 2019
- for Polaris 850 2020
- for Polaris 850 2021
- for Polaris 850 2022
On-The-Job Use
- Restoring compression in high-mileage engines
- Top-end rebuild procedures
- Preventing excessive blow-by during operation
Specs At A Glance
| Part Number(s) | SPI 85mm |
| Material | Cast Iron |
| Bore Size | 85mm |
Good To Know
Q: Should the ring end gap be measured before installation? A: Yes, checking the ring end gap inside the cylinder ensures it falls within the manufacturer specified tolerances for the specific bore size.
Q: Is a hone necessary when installing these rings? A: A light cylinder hone is recommended to break the glaze on the cylinder walls to allow for proper ring seating.
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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