I've had a couple of races with this cover and the durability is great. The bump keeps you in position, kind of like a poke in the back as a reminder. I recommend installing the start of the bump starting on the second bumpout in the cover. If you move it back further it will be to far back on the Kaw-KX450 (2010). I liked the grip and the bump reminder, looks great on the bike to boot. I had mine recovered at an Upholstery Shop for $30, so if you don't have a good stapler let the pros do it right.