I've completed one season with this cover and it has held up well. The bump helps to keep you in the sweet spot while twisting the throttle. The seat looks really sweet with raised lettering and color match to factory colors. 2010 KX450.
This particular cover does not come with the bump, but we do sell one just like it that does include the bump. Here is the link to the page!
This is the seat with out the bump. The image shown is just a generic picture of the seat cover. We will have it switched to match the correct seat cover.
It's basically identical, but without the bump.