SPI Standard Bore Piston & Bearing for Arctic Cat ZR440 Sno Pro 1996-2001 66.5mm
SPI Standard Bore Piston & Bearing for Arctic Cat ZR440 Sno Pro 1996-2001 66.5mm
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SPI Standard Bore Piston & Bearing for Arctic Cat
This SPI standard bore piston and bearing assembly is a direct replacement for Arctic Cat ZR440 Sno Pro snowmobiles from 1996 to 2001, featuring a 66.5mm bore size to restore compression and performance.
Overview
The SPI standard bore piston & bearing is built for Arctic Cat ZR440 Sno Pro models, providing a reliable upgrade for worn original pistons. This 66.5mm piston kit includes a precision-ground wrist pin bearing, ensuring smooth operation and long service life in high-performance snowmobile engines.
Built For Performance
- Standard 66.5mm bore diameter matches OEM specifications for ZR440 Sno Pro engines
- Includes matching wrist pin bearing for reduced friction and extended durability
- Manufactured from high-strength aluminum alloy for heat resistance and weight reduction
- Precision-machined ring grooves accept standard piston rings for easy installation
- Designed to maintain proper compression and power output in high-RPM operation
Fits These Machines
- for Arctic Cat ZR440 Sno Pro (1996-2001)
On-The-Job Use
- Snowmobile trail riding and racing applications requiring reliable engine rebuilds
- Winter recreation and competitive snocross events where engine performance is critical
- Restoration of vintage Arctic Cat snowmobiles to original factory specifications
- High-mileage engine overhaul to restore lost compression and reduce oil consumption
Specs At A Glance
| Bore Size | 66.5mm |
| Type | Standard Bore Piston & Bearing |
| Application | Arctic Cat ZR440 Sno Pro (1996-2001) |
Good To Know
Q: Can this piston be used with stock cylinder? A: Yes, it is a standard bore piston designed for cylinders that have not been oversized, so it fits original bore dimensions without machining.
Q: Does the bearing come pre-installed? A: The bearing is included separately and must be pressed into the connecting rod during assembly, following standard engine rebuild procedures.
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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