2 SPI .010 Over Bore Piston Kits for Polaris XC 500, XC SP, RMK, Classic 70.75mm

SPI .010 Over Bore Piston Kits for Polaris

These SPI .010 over bore piston kits provide two pistons for Polaris XC 500, XC SP, RMK, and Classic models, featuring a 70.75mm bore size for .010 oversize rebuilds to restore engine performance.

Overview

The SPI .010 over bore piston kit delivers a pair of precision-machined pistons designed for Polaris 500cc engines in XC, SP, RMK, and Classic models. With a 70.75mm bore size, this kit allows for a .010 oversize rebuild, compensating for cylinder wear and restoring compression. These piston kits are ideal for rebuilding Polaris snowmobile and ATV engines to like-new condition.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• Includes piston rings and wrist pins for a complete installation
• Designed to match OEM specifications for Polaris 500cc engines
• 70.75mm bore provides a .010 oversize fit to refresh worn cylinders
• Lightweight construction reduces reciprocating mass for improved throttle response

Fits These Machines

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

On-The-Job Use

• Rebuilding Polaris 500cc engines after cylinder wear or scoring
• Increasing engine performance with an oversize piston upgrade
• Restoring compression and power in high-mileage snowmobiles or ATVs
• Performing a top end overhaul during engine restoration

Specs At A Glance

Good To Know

Q: Are these piston kits compatible with any Polaris 500cc engine? A: They are specifically designed for XC, SP, RMK, and Classic models; confirm your exact engine code before purchase.

Q: Do these pistons come with rings? A: Yes, each kit includes piston rings and wrist pins for a complete installation.

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