I contacted Dubach Racing as to the possibility of them producing this type of pipe for the 10-13 YZ450F. They said that they are currently testing and pricing it. Also said that it would take new radiator(s), so not sure if it would be a practical product for them. Did not contact FMF, but think that they would be possibly going through the same steps. Probably shouldn't hold our breath on this, just some info for anybody that is interested.