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    ← Air Intake
    TST WORX Airbox for Kawasaki Ninja 400 2018-2023

    TST Industries

    TST WORX Airbox for Kawasaki Ninja 400 2018-2023

    $599.99

    Fits 1 Kawasaki model

    • Ninja 4002018–2023

    Features Replaces the entire stock airbox with a race-developed design 2.5 lbs lighter than the stock setup Bolt-on component - no modification required* Provides 8% increase to peak power compared to stock airbox Provides 5-10% increase in the upper range (9500 - 12500 RPM) compared to stock airbox Carbon fiber and high-strength polymer construction Toray Carbon Fiber Prepreg features a high gloss clear coat for UV protection Includes WORX V2 Velocity Stacks for optimized top end performance Includes specific WORX developed reusable pre-oiled foam air filter Comes pre-assembled and ready for installation Non-ABS and ABS-Compatible versions available TST WORX Stage 3 ECU Tune developed specifically for this airbox - sold separately *Small tab located on the frame needs to be bent to provide proper clearance for installation. Description Our quest for class domination led our engineers to completely redesign the airbox assembly, seeking top-end power gains through a sophisticated new design that combines with our WORX V2 Velocity Stacks and a proprietary reusable open-cell high-performance foam air filter to deliver a 5-10% increase in the 9500-12500 RPM range. When paired with our TST WORX Stage 3 ECU Tune or your own custom tune, the results are instantly noticeable. The WORX Airbox completely replaces the stock setup, including the stock air filter and velocity stacks, and replaces 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. Built with uncompromising quality, this Ninja 400 Airbox is unlike anything else on the market. The WORX Airbox comes pre-assembled, therefore we are not able to substitute items or customize the airbox or velocity stacks per order. This item is not eligible for discounts.

    Brand
    TST Industries
    Category
    Air Intake
    Weight
    12 lb
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    TST Industries$599.99Buy

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    $520$540$560$580$600$620$640$6602:35 AM8:35 AM2:35 PM8:35 PM2:35 AMTST Industries — $599.99 on 9/18/2026
    TST Industries

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