SPI .010 Over Bore Top End Repair Kit for Polaris 550 F/C 1999-2021 73.25mm

SPI .010 Over Bore Top End Repair Kit for Polaris

This top end repair kit for Polaris 550 F/C engines from 1999 to 2021 includes a .010 over bore piston set at 73.25mm, rings, gaskets, and wrist pin for a complete cylinder rebuild.

Overview

The SPI .010 Over Bore Top End Repair Kit is a comprehensive rebuild solution for Polaris 550 F/C engines, restoring lost compression and power. Designed for 1999-2021 models with a 73.25mm bore, this kit includes all necessary components for a top-end overhaul.

Built For Performance

• Precision-machined piston at .010 over stock bore for tight cylinder fit
• Includes high-quality rings for optimal compression
• Complete gasket set ensures leak-free assembly
• Wrist pin and circlips included for secure piston installation
• Designed to withstand high RPM and heat in Polaris 550 engines

Fits These Machines

• for Polaris 550 F/C (1999-2021)

On-The-Job Use

• Rebuilding top end of snowmobiles equipped with Polaris 550 fan-cooled engine
• Restoring power after wear or overheating damage
• Used by DIY mechanics and professional rebuilders for complete cylinder refresh
• Common upgrade for trail and utility snowmobiles

Specs At A Glance

Good To Know

Q: Will this kit fit my 2005 Polaris 550? A: Yes, the .010 over bore top end repair kit fits Polaris 550 F/C engines from 1999 to 2021, but always confirm serial number for exact fitment.

Q: Do I need to machine the cylinder? A: Yes, this kit is designed for .010 over bore, so the cylinder must be bored and honed to 73.25mm before installation.

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