Namura .020 Over Bore Piston & Gasket Kit for Kawasaki KLX400 90.5mm

Namura .020 Over Bore Piston & Gasket Kit for Kawasaki KLX400 90.5mm

This Namura .020 over bore piston and gasket kit is a high-performance replacement for Kawasaki KLX400 engines, providing increased displacement and compression for improved power.

Overview

The Namura .020 over bore piston and gasket kit is designed for the Kawasaki KLX400, offering a 90.5mm bore size for a mild performance enhancement. This kit includes the piston, rings, wrist pin, and all necessary gaskets for a complete top-end rebuild. It is ideal for riders seeking reliable aftermarket power for their KLX400.

Built For Performance

• .020 over bore (90.5mm) increases displacement and compression ratio
• High-strength aluminum alloy piston for durability under high heat
• Precision-machined ring grooves for optimal seal and reduced blow-by
• Includes complete gasket set for full top-end reseal
• Wrist pin and circlips included for easy installation

Fits These Machines

• for Kawasaki KLX400

On-The-Job Use

• Trail riding and off-road racing where increased mid-range power is desired
• Top-end rebuild or performance enhancement for high-mileage KLX400 engines
• Compatible with both liquid-cooled and air-cooled engines
• Suitable for recreational and competitive motocross use

Specs At A Glance

Good To Know

Q: Is this piston kit compatible with the standard bore cylinder?A: No, this kit is designed for a cylinder that has been bored .020 over (90.5mm). Your cylinder must be machined to match this oversize before installation.

Q: Does this kit include the cylinder head gasket?A: Yes, the gasket kit includes all top-end gaskets including the cylinder base gasket and head gasket for a complete reseal.

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