2018+ Kawasaki Ninja 400 TST WORX Airbox - Product Feature by TST Industries

Gain podium-worthy performance with the TST WORX Airbox. This entirely replaces your stock airbox with a race-tuned assembly made from premium materials, inside and out. It is designed to improve airflow and engine performance, specifically in the top end of the RPM range, so you can achieve faster lap times and race day dominance.

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Our quest for class domination has led our engineering team down a lot of paths, the latest being a complete redesign of the airbox assembly in an effort to create the best possible air delivery into the engine for optimized performance, especially where it's needed the most - the top end. What they developed after months of testing and design has not only executed that goal but done so in one of the most elegant and sophisticated ways possible. The new WORX Airbox is capable of increasing power by 5-10% in the upper RPM range between 9500 RPM and 12500 RPM, ensuring you have the power to separate yourself from the pack and drop your lap time. When paired with our specific WORX tune, or your own custom tune, the new airbox provides immediately noticeable improvements that will help you land your feet on the podium. The Toray carbon fiber intake construction mounts to a high-strength polymer back airbox structure, enclosing the new WORX Air Filter and V2 Velocity Stacks. The entire kit comes pre-assembled with the filter pre-oiled and ready for use. It drops in to replace the stock setup, removing with it the stock air filter and velocity stacks and replacing them with specifically designed components that take advantage of the improved airflow and further optimize the volumetric efficiency for better engine performance and faster lap times. This Ninja 400 Airbox is unlike anything else on the market. It not only delivers power performance gains but does so while being a perfect representation of the high-quality design and manufacturing standards we hold ourselves to here at TST Industries. You won't find this type of airbox anywhere else!