These sliders with no cutouts are a great purchase. They are easy to install and the instructions on the website couldn't be more detailed. You only have to remove one panel on the left side to install the slider, which is much easier on the Z400 than the Ninja 400, but still easy. Shogun makes high quality accessories. I've attached some pictures as I didn't see them for the Z400. I recommend and the price is right.
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