Piston Kit Standard Bore 52mm Fit for Yamaha Axis YA90 90-97 Jog CY90 91-97

Standard Bore 52mm Piston Kit for Yamaha

This standard bore 52mm piston kit for Yamaha restores engine compression and combustion efficiency in compatible scooters.

Overview

This standard bore 52mm piston kit is designed to replace worn components in small-displacement two-stroke engines. The standard bore 52mm piston kit includes the piston, rings, wrist pin, and retaining clips needed for a complete top-end rebuild. It provides a reliable solution for mechanics and riders seeking to restore factory-spec engine performance.

Built For Performance

• Standard 52mm cylinder bore diameter for exact tolerance fit.
• Cast aluminum alloy construction for thermal efficiency and durability.
• Precision-engineered piston rings to prevent blow-by and maintain compression.
• Heat-treated wrist pin provides high strength under combustion loads.

Fits These Machines

• for Yamaha Axis YA90
• for Yamaha Jog CY90

On-The-Job Use

• Rebuilding the top end of a scooter engine during scheduled maintenance.
• Restoring compression in engines showing signs of cylinder wear.
• Replacing damaged pistons and rings after a thermal seizure.

Specs At A Glance

Good To Know

Q: Does this kit include a wrist pin bearing? A: This kit includes the piston, rings, wrist pin, and clips, but the needle bearing must be purchased separately if replacement is needed.

Q: Is cylinder honing required before installing this kit? A: Yes, honing the cylinder wall is highly recommended to ensure the new piston rings seat properly.

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