SPI .010 Over Bore Top End Repair Kit for Polaris Snow 1986-1999 500 F/C 72.25mm

.010 Over Bore Top End Repair Kit for Polaris

This .010 over bore top end repair kit for Polaris snowmobile engines includes pistons, rings, wrist pins, and gaskets to rebuild a 500cc F/C engine from 1986-1999 models, restoring compression and performance.

Overview

The .010 over bore top end repair kit for Polaris is a complete rebuild set designed for 500cc F/C snowmobile engines from 1986 to 1999. It provides all necessary components to refresh the cylinder bore and restore lost power, making it ideal for maintenance or performance restoration on older Polaris sleds.

Built For Performance

• Includes pistons with precision-machined ring grooves for reliable sealing
• High-quality rings reduce friction and improve compression
• Wrist pins and circlips are included for a complete assembly
• Gasket set ensures a leak-free seal between cylinder and crankcase
• 0.010 inch oversize accommodates worn cylinder bores

Fits These Machines

• for Polaris Snowmobile 500 F/C (1986-1999)

On-The-Job Use

• Commonly used during full engine rebuilds or top-end refreshes
• Ideal for restoring snowmobiles that have lost compression
• Suitable for both trail riding and performance applications
• Can be installed by experienced DIY mechanics or professional shops

Specs At A Glance

Good To Know

Q: Does this kit include wrist pins and circlips? A: Yes, the kit comes with wrist pins and circlips to secure the pistons to the connecting rods.

Q: Can I use this kit on a 500cc liquid-cooled Polaris engine? A: This kit is specifically for the 500cc F/C (fan-cooled) engine; liquid-cooled models require a different kit.

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