TST Worx Airbox Kit Kawasaki Ninja 400 2018+

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. Each kit is hand-assembled in our Florida facility and 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.
 
Include the tune with your purchase to ensure your ECU is properly set up to handle the improved airflow. For the best results in tuning, we highly recommend seeking the help of a tech that has access to your bike and specializes in tuning race bikes.
 
Applications:
Kawasaki Ninja 400 (non-ABS models ONLY) | 2018, 2019, 2020, 2021, 2022, 2023
THIS IS NOT COMPATIBLE WITH ABS MODELS
 
Including the tune? You are responsible for sending us a stock, untuned, undamaged, and unmodified Ninja 400 ECU. We will flash the ECU with your selected tune and send your ECU back to you. See the Tune Details tab for more information. The WORX Airbox will ship when the WORX tuned ECU ships.
 
The WORX Airbox comes pre-assembled, therefore we are not able to substitute items or customize the airbox or velocity stacks per order.