I've got an 06 450F, brand new left over. Less than 200 miles. Did the first maintenance, and things are looking good. I've noticed that, I believe Boyeson, advertising higher flow covers and impellers, and also a company advertising high capacity radiators. Things are starting to get hot at my regular riding area's, and although I've not had any cooling problems yet, are these mods a good idea or even necessary? What have you guys's experiences been with the cooling on the later model 450's? My buddies sometimes have boiling problems on their Honda's, but to date, my Yammer has been trouble free. Thanks for any and all replies. Robert.