TST WORX Airbox for Kawasaki Ninja 400 2018-2023

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

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

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 !