Namura Standard Bore Size A 47.44mm Piston Kit for Yamaha YZ85 2002-2023 47.5mm

Standard Bore Size A 47.44mm Piston Kit for Yamaha

This standard bore piston kit for Yamaha YZ85 measures 47.44mm and is suitable for 2002-2023 models.

Overview

This standard bore size A piston kit is designed for Yamaha YZ85 motorcycles from 2002 to 2023. It includes a 47.44mm piston, rings, wrist pin, and circlips for a complete piston replacement. This kit restores compression and performance for two-stroke engines requiring a 47.5mm bore after honing.

Built For Performance

• Precision-machined piston from high-strength aluminum alloy
• Includes ring set with proper end gap for optimal seal
• Wrist pin with c-clips for secure installation
• Matches OEM specifications for stock replacement
• Designed to withstand high RPM operation

Fits These Machines

• for Yamaha YZ85 2002-2023

On-The-Job Use

• Commonly used in top end rebuilds on Yamaha YZ85 two-stroke engines
• Commonly used in motocross, supercross, and off-road racing
• Essential when replacing worn piston and rings to restore power

Specs At A Glance

Good To Know

Q:Can this piston kit be used with a 47.5mm bore?A:The piston is 47.44mm, which allows for proper clearance when the cylinder is honed to 47.5mm. Always check your cylinder bore before installation.

Q:Does this kit include the piston pin bearing?A:No, the kit includes the wrist pin and circlips but does not include the connecting rod bearing. You may need to order that separately if required.

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