Namura .020 Over Bore Piston Kit for Arctic Cat 1999-2005 250 Utility 66.5mm

.020 Over Bore Piston Kit for Arctic Cat

This 66.5mm .020 over bore piston kit is designed for Arctic Cat 250 Utility engines from 1999 to 2005, restoring compression and performance in a worn cylinder.

Overview

This .020 over bore piston kit for Arctic Cat provides a precise 66.5mm diameter piston to refresh your 250 Utility engine. It includes rings, pin, and clips for a complete top-end rebuild. Ideal for restoring power and reliability in Arctic Cat ATVs from 1999 through 2005.

Built For Performance

• 66.5mm piston diameter with .020 overbore for cylinder refinishing
• High-strength aluminum alloy construction for durability
• Precision-machined ring grooves and pin bore
• Includes piston rings, wrist pin, and retaining clips
• Designed for 250cc utility engines with standard stroke

Fits These Machines

• for Arctic Cat 250 Utility (1999-2005)

On-The-Job Use

• Replacing worn pistons in Arctic Cat utility ATVs
• Overhauling engine after top-end failure or low compression
• Restoring performance for trail riding and utility work
• Common maintenance for high-hour machines

Specs At A Glance

Good To Know

Q: Is this piston kit compatible with the stock cylinder? A: This kit requires the cylinder to be bored .020 over stock; it will not fit a standard bore cylinder without machining.

Q: Does it include all necessary components? A: Yes, the kit comes with the piston, rings, wrist pin, and circlips—everything needed for the piston assembly.

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