Athena 03-06 Kawasaki KLX 400 90mm 400cc Standard Bore Cylinder Kit

This Athena cylinder kit uses a lightweight aluminum cylinder with a nickel-silicon coating, a design choice that helps with heat dissipation and keeps things running smoothly. It’s built to match the original performance of your 2003-2006 Kawasaki KLX 400, offering solid reliability for your engine rebuild. The piston is specifically designed to reduce friction, which means less drag and potentially improved efficiency.

When you open the box, you’ll find everything you need to get your engine back in shape. The kit includes the standard bore aluminum cylinder, a complete piston assembly with the piston pin and rings already installed, and all the necessary gaskets to ensure a proper seal. This makes it a comprehensive solution for restoring your KLX 400’s engine to its factory specifications. The nickel-silicon coating on the barrel is a durable surface that holds up well to the demands of regular riding.

Because this kit is designed to be a standard bore replacement, it's a straightforward way to get your engine running right again. Just be aware that this part is not CARB approved and cannot be shipped to California.