Well after talking to many people, I was told that these bars would bolt right onto my 2005 400ex. When I received the bars I was extremely disappointed to find out that the instructions stated that these bars will bolt right onto your 400ex with the exception of 2005 models! The instructions state that the front mounting section of the heel guard will need to be cut off! exactly what I didnt want to do. So, here's the deal, you can heat up the heel guard with a heat gun and and gently stretch it a 1/4 inch and tighten it down. It will work. The pegs needed to be drilled along with opening up the hole on the nerf bars that was "pre drilled". Also, the instructions and picture are terrible along with any helpful info on the proper way to install and adjust the webs. Bottom line for the 2005 model...they will work and they will look good but not without some time and a bit of frustration. The best part about these nerf bars was buying them from Motor Sport, nice people and they do seem to care.