SPI .020 Over Bore Piston Kit for Polaris Widetrak LX 500 fits 1998-2011 72.5mm

SPI .020 Over Bore Piston Kit for Polaris Widetrak LX 500

This SPI .020 over bore piston kit replaces the original piston in Polaris Widetrak LX 500 snowmobiles with a 72.5mm bore, restoring compression and performance after a top end rebuild.

Overview

The SPI .020 over bore piston kit is designed for Polaris Widetrak LX 500 models from 1998 to 2011, providing a high-quality replacement that brings the engine back to life. Featuring a 72.5mm bore size, this piston kit is a direct fit for the 500cc engine, ensuring reliable operation on the trail.

Built For Performance

• Precision machined 72.5mm piston with .020 oversize
• High-strength aluminum alloy construction for durability
• Includes piston rings and wrist pin for complete installation
• Engineered to match OEM specifications for reliable fitment
• Tested for consistent compression and smooth operation

Fits These Machines

• for Polaris Widetrak LX 500 (1998-2011)

On-The-Job Use

• Commonly used during top-end rebuilds on Polaris snowmobiles
• Ideal for restoring power in high-mileage engines
• Suitable for trail riding and utility snowmobile applications

Specs At A Glance

Good To Know

Q: Do I need to replace the cylinder as well? A: Typically, a .020 over bore piston matches a freshly honed cylinder; if the cylinder is worn beyond spec, boring may be required.

Q: What other parts should I replace with this piston? A: It is recommended to install a new gasket set and check the wrist pin bearing for wear during a top-end rebuild.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.