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I acknowledge that the product(s) being purchased () was/were designed and intended for closed course competition use only. The product(s) is/are neither designed nor intended for use on public roads or land and is against Federal and State regulations to do so. By proceeding with this purchase, I , agree to only use the product(s) for closed course competition.

If an ECU tune was purchased, please send your unmodified and undamaged OEM ECU to TST Industries, located at 623 Pleasant St, Lake Helen, FL 32744.

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U.S. customers are offered a free shipping option for orders with a discounted subtotal greater than $150.00 (before taxes applied). The order's shipment destination must reside within the United States of America. The free shipping options still utilize our standard postage providers and 3rd party shipping companies. Does not apply to large items such as exhausts, stands, and bodywork shipping. All terms and conditions that apply to normal orders will continue to apply to orders with a free shipping option.

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Reviews

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TST WORX Airbox for Kawasaki Ninja 400 2018-2023

TST WORX Airbox for Kawasaki Ninja 400 2018-2023
 
(3 reviews)  

5 stars: 
 3 review(s)
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Perkins Racing
Jul 29, 2022
I purchased this from TST during their testing phase and I am impressed. Awesome sound, makes really good power, easy install. A work of art.

Advantages: The best

Disadvantages: Worth it
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Tom McMasters
Jul 21, 2022
This was 100% worth it and it looks wicked awesome too. I absolutely went faster at my track day weekend when I tested it out compared to my times on day 1, I dropped almost 3 seconds on day 2. The installation was easy to do in less than an hour and I mean this airbox just looks so. cool.

Advantages: I noticed higher top-end speed and better power throughout the power curve. It also added a real deep sound to the bike which I LOVED. Overall I found myself riding 2-3 seconds a lap faster compared to laps that same day with a standard airbox.

Disadvantages: While the installation was pretty straightforward forward it just sucks that you have to take off bodywork and tank to get to the airbox, though that would be the case for any sort of airbox mod though. Not that bad though honestly
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pete berdos
Aug 28, 2022
another great performance upgrade from TST. words can't described how well this airbox works ! besides being a beautiful work of art, it's workmanship shouldn't have to be hidden, BUT to hide the HP gains no one can see, well we know we all can appreciate that ! so feedback I have to offer for this item is having run against other 400s that were similar to mine and doing a 3rd or 4th gear pull, who ever got the jump usually edged out the other bike or one bike would crawl past the other. " VERY IMPRESSIVE" is what I heard after the same pulls with the same bikes ! the difference on this day was I pulled away like I was on a 600, it was bring a gun to a knife fight ! if you're looking for that extra edge, look no further ! this was added to a bike with full exhaust (spark) stock engine TBs ( had stock air box w/ TST stacks and DNA filter ) and tuned prior to replacing airbix

Advantages: increased power

Disadvantages: can't see how pretty it is under the tank !
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Reviews

TST Frame Slider Crash Protection for Kawasaki ZX-6R 2024+
TST Frame Slider Crash Protection for Kawasaki ZX-6R 2024+
Only giving a 4 out of 5 as everything was great except for one of the smaller bolt heads stripping on installation. The one that threads into the frame itself. For some reason one of them stripped before I could apply the appropriate torque spec mentioned in the installation video, but it was tight nonetheless. Otherwise it looks and feels great.
Caleb
May 8, 2024
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