Cylinder Works 03-04 Kawasaki KLX 400 R 400cc Standard Bore High Comp Cylinder Kit 13.5:1 Comp

Cylinder Works is known for making solid engine components that help you get your machine back on the road, or in this case, the trail. This high compression cylinder kit is built for the 2003-2004 Kawasaki KLX 400 R, bringing its 400cc engine back to life with an improved compression ratio of 13.5:1. If you're looking to restore lost power or give your KLX a noticeable boost, this kit is designed to do just that.

What sets this kit apart is the cylinder itself. It's made from cast aluminum and features a nickel silicon carbide (NSC) electroplate bore. This advanced plating allows for very tight tolerances, which means less friction as the piston moves and significantly improved durability over time. The bore is also precision diamond honed to exact dimensions and the right surface finish. This careful honing is crucial for ensuring your piston rings seal properly against the cylinder wall, which is key for both power and keeping oil where it belongs.

When you open the box, you'll find everything you need to get this cylinder installed and your engine running strong again. The kit includes the Cylinder Works cylinder, a Vertex piston, and all the necessary gaskets. This makes it a complete package to help you restore your KLX 400 R's horsepower and performance, often at a more competitive price than going with OEM parts.