Namura .060 Over Bore Piston Kit for Kawasaki KLX400, KLX400R & KLX400SR 91.5mm

Namura .060 Over Bore Piston Kit for Kawasaki KLX400, KLX400R & KLX400SR

This aftermarket .060 over bore piston kit from Namura replaces the original piston in compatible Kawasaki KLX400 models, increasing displacement and performance.

Overview

This Namura piston kit is a .060 over bore replacement for the original piston in Kawasaki KLX400, KLX400R, and KLX400SR motorcycles. Designed to boost compression and power, it is an ideal choice for engine rebuilds or power improvements. The kit is precision-engineered to fit and function like the OEM component.

Built For Performance

• Precision-machined from high-silicone aluminum alloy for strength and heat resistance
• Includes piston rings, wrist pin, and circlips for a complete installation
• Manufactured to OEM specifications for drop-in fitment
• Heat-treated and T6 aged for durability
• Balanced to reduce vibration at high RPM

Fits These Machines

• for Kawasaki KLX400
• for Kawasaki KLX400R
• for Kawasaki KLX400SR

On-The-Job Use

• Off-road trail riding
• Dirt bike racing
• Enduro competitions
• Engine rebuilding and top-end refresh

Specs At A Glance

Good To Know

Q: Is this a direct replacement for the original piston? A: Yes, this piston kit is designed to directly replace the original piston in compatible Kawasaki KLX400 models. Always verify fitment with your specific serial number.

Q: What is included in the kit? A: The kit includes the piston, piston rings, wrist pin, and circlips – everything needed for a complete piston replacement.

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