Namura Size A 89.96mm Standard Bore Piston Kit for Kawasaki KLX400 KLX400R 90mm

Namura Size A 89.96mm Standard Bore Piston Kit for Kawasaki

This Namura Size A 89.96mm standard bore piston kit provides a direct replacement piston assembly for Kawasaki KLX400 and KLX400R off-road motorcycles, restoring compression and engine performance after a top-end rebuild.

Overview

This Namura piston kit is a high-quality aftermarket replacement designed for Kawasaki KLX400 and KLX400R engines. It includes the piston, rings, wrist pin, and circlips, and is machined to the standard 89.96mm bore size. The kit ensures a precise fit and reliable operation for dirt bike enthusiasts rebuilding their top end.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• Includes a matched set of rings for optimal compression and oil control
• Designed to OEM specifications for easy installation
• Lightweight construction reduces reciprocating mass for improved throttle response
• Comes with wrist pin and circlips for a complete rebuild kit

Fits These Machines

• for Kawasaki KLX400
• for Kawasaki KLX400R

On-The-Job Use

• Top-end engine rebuilds on Kawasaki KLX400 models
• Off-road and trail riding where engine performance and reliability are critical
• Routine maintenance after high-mileage or race use

Specs At A Glance

Good To Know

Q: Will this piston kit fit a Kawasaki KLX400R? A: Yes, this kit is designed for both the KLX400 and KLX400R models. Always verify your engine's bore condition before ordering.

Q: What is the difference between Size A and other sizes? A: Size A is the standard factory bore diameter; aftermarket oversize pistons are available for cylinders that have been bored out.

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