Namura Standard Bore Size A Top End Kit for Kawasaki KX250F 2017-2019 77mm

Namura Standard Bore Size A Top End Kit for Kawasaki

This Namura Standard Bore Size A top end kit rebuilds the cylinder and piston assembly for Kawasaki KX250F models from 2017 to 2019, providing a complete replacement set with a 77mm bore to restore engine performance.

Overview

The Namura Standard Bore Size A top end kit is a direct-fit cylinder and piston kit designed for Kawasaki KX250F engines. It includes all necessary components for a top end rebuild, delivering reliable power and durability for motocross bikes. This top end kit ensures precise fitment for 2017-2019 models with the 77mm bore size.

Built For Performance

• Forged piston for high-strength and heat resistance
• Chromed cylinder bore reduces wear and extends service life
• Includes piston rings, wrist pin, and circlips for complete installation
• Precisely machined to OEM specifications for reliable fit
• Designed for standard bore size requiring no cylinder boring

Fits These Machines

• for Kawasaki KX250F (2017-2019)

On-The-Job Use

• Rebuilding worn top end on Kawasaki KX250F motocross bikes
• Restoring compression and power after competitive use
• Replacing damaged piston or cylinder from racing conditions
• Servicing trail or track KX250F machines

Specs At A Glance

Good To Know

Q: Is this kit complete for installation? A: Yes, it includes piston, rings, wrist pin, circlips, and cylinder assembly, all needed for a standard top end rebuild.

Q: Do I need to machine the cylinder? A: No, this is a standard bore size kit, so the cylinder is pre-finished and ready to install on a properly prepared engine.

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