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  1. Ninja 400/Z400 General Discussion Forum
    Hi everyone I just wanted to quickly write a review on the boosterplug, so u guys can decide if you want to buy it or not. What i noticed right away, after installing it: my bike revs higher when starting it up the enginebreaking is not that harsh anymore, still not an "extreme difference"...
  2. Ninja 400/Z400 General Discussion Forum
    ++++++UPDATED: 05/04/2021 - pics added++++++ I thought I would do, what may be helpful for some, a rating of the mods I have done to my Ninja 400. This can help people who are looking at the perspective mods and deciding whether or not they are worth it or beneficial. I will put my former mods...
  3. What Did You Do to Your Ninja 400/Z400 Today?
    After waiting for a fuel rail for nearly 2 weeks, I finally got it in Monday (4/12/21) and put her back together that very day. It is unreal how much of a difference these mods have made to the appearance, and especially, the performance! It pulls harder and has a more sporty feel, sounds...
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