2 SPI Standard Bore Piston Kits for Polaris XC 500, XC SP 500 RMK Classic 70.5mm

2 SPI Standard Bore Piston Kits for Polaris

This set of two SPI standard bore piston kits provides a reliable replacement for Polaris XC 500, XC SP 500, and RMK Classic snowmobiles, featuring a 70.5mm bore size.

Overview

These SPI standard bore piston kits are designed for Polaris snowmobile engines, offering direct replacement for dealers and enthusiasts. Each kit includes a piston, rings, wrist pin, and circlips to restore compression and performance in 500cc twin-cylinder models.

Built For Performance

• Standard bore design maintains factory compression ratios
• Includes piston rings for proper sealing and reduced blow-by
• Wrist pin and circlips included for complete installation
• 70.5mm bore size matches OEM specifications for XC 500 engines
• Sold as a pair for both cylinders

Fits These Machines

• for Polaris XC 500
• for Polaris XC SP 500
• for Polaris RMK Classic

On-The-Job Use

• Snowmobile engine rebuilds
• Trail riding and recreational snowmobiling
• Racing and performance applications on 500cc Polaris models

Specs At A Glance

Good To Know

Q: Do these piston kits include piston rings? A: Yes, each piston kit comes with rings, wrist pin, and circlips for a complete top-end rebuild.

Q: Are these pistons compatible with aftermarket cylinders? A: They are designed for standard bore cylinders; if cylinders have been overbored, a different size may be required.

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