1987-2004 Kawasaki KX500 Billet Shift Drum 13239-1143

Ultimate Precision: KX500 Billet Shift Drum

Experience consistent, positive gear shifts with the definitive KX500 Shift Drum upgrade. Engineered from the ground up for maximum longevity and performance.

The Strongest Drum Available

This component is billet machined from solid 4140 Pre-hardened Chromoly Steel. Unlike stock or cast alternatives, our drum undergoes a rigorous treatment process:

• Stress Relieved to maximize structural soundness.

• Nitrided to give the complex shift grooves the hardest, most wear-resistant surface achievable.

Flawless Shifting Guaranteed

This level of material and surface treatment guarantees superior interaction with your shift forks. The precise, ultra-hard grooves resist pitting and deformation, delivering crisp, repeatable, and buttery-smooth shifts under any load.

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