2 SPI .040 Over Bore Piston Kits for Polaris Widetrak LX 500 1998-2011 73mm

SPI .040 Over Bore Piston Kits for Polaris Widetrak LX 500 1998-2011

These SPI .040 over bore piston kits are designed for the Polaris Widetrak LX 500, providing a 73mm bore size for engine rebuilding and performance restoration.

Overview

This piston kit set includes two SPI .040 over bore pistons specifically engineered for Polaris Widetrak LX 500 models from 1998 to 2011. Each piston measures 73mm and is built to restore compression and power in high-mileage or worn engines. These SPI piston kits are a direct replacement for the original factory pistons, offering reliable performance for your Polaris snowmobile.

Built For Performance

• Precision-machined 73mm pistons for .040 over bore applications
• Durable cast aluminum construction with reinforced skirt design
• Includes piston rings, wrist pins, and circlips for complete installation
• Manufactured to OEM specifications for consistent fit and function
• Designed to withstand high temperatures and heavy loads during operation

Fits These Machines

• for Polaris Widetrak LX 500 (1998-2011)

On-The-Job Use

• Ideal for rebuilding engines on Polaris snowmobiles used in trail riding and touring
• Suitable for high-mileage engines requiring a .040 over bore to restore cylinder dimensions
• Perfect for restoring power and reliability in vintage Polaris Widetrak LX models

Specs At A Glance

Good To Know

Q: Are these pistons pre-assembled with rings? A: No, rings must be installed during assembly. Follow the manufacturer's ring gap and orientation instructions for best results.

Q: Will these fit the Polaris Widetrak LX 500 with standard bore? A: No, these are .040 over bore pistons; they require the cylinder to be bored to 73mm to accommodate the larger piston size.

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