Top End Kit 96.6mm Cylinder Piston Gasket For Polaris Sportsman 550 XP EPS 09-14

Top End Kit for Polaris Sportsman 550 XP EPS

This 96.6mm top end kit delivers the cylinder, piston, and gasket components needed to rebuild the upper engine on Polaris Sportsman 550 XP EPS models. The kit restores compression and oil control on a worn or scored top end, giving home mechanics and shops a complete replacement set in one box. It is built as a direct-fit alternative for riders who need dependable performance without sourcing each part separately.

Overview

This top end kit includes a 96.6mm cylinder, matching piston, and gasket set for the Polaris Sportsman 550 XP EPS. It is designed to replace worn or damaged upper engine components and bring compression back to spec. The kit suits anyone rebuilding a tired Sportsman 550 XP EPS top end, whether for routine maintenance or a full engine refresh.

Built For Performance

• 96.6mm bore cylinder matched to the stock displacement of the Sportsman 550 XP EPS
• Piston sized to the cylinder bore for consistent compression and oil control
• Complete gasket set to reseal the top end in one job
• Components manufactured to OEM-style dimensions for straightforward installation
• Replacement-grade materials that hold up to sustained off-road use
• Machined mating surfaces for a clean seal against the cylinder head and base

Fits These Machines

• for Polaris Sportsman 550 XP EPS 2009
• for Polaris Sportsman 550 XP EPS 2010
• for Polaris Sportsman 550 XP EPS 2011
• for Polaris Sportsman 550 XP EPS 2012
• for Polaris Sportsman 550 XP EPS 2013
• for Polaris Sportsman 550 XP EPS 2014

On-The-Job Use

• Top end rebuilds after compression loss or heavy oil consumption
• Refreshing a high-hour Sportsman 550 XP EPS engine
• Repairing a scored or damaged cylinder and piston
• Preventive maintenance during off-season service
• Restoring power for trail, farm, and utility work

Specs At A Glance

Good To Know

Q: Is this an original Polaris part? A: No, it is an aftermarket replacement kit built to fit Polaris Sportsman 550 XP EPS models. Always compare measurements and part numbers against your machine before ordering.

Q: Do I need to replace the piston and cylinder together? A: When the cylinder is scored or out of round, replacing both keeps the bore and piston matched for proper sealing. Installing a new piston in a worn cylinder can lead to poor compression and premature wear.

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