I picked up my bike yesterday (2007 Road King Classic) after having the dealer install a set of Rinehart slip ons, a Power Commander III, and Se air cleaner. I gotta say.............WOW.........what a difference. My bike is running "crisper" (dealer mechanic said it probably gave me 8-10 more HP), it sounds great, but the thing I noticed most of all was how COOL it now runs! Man, I cannot believe the bike that used to cook my legs is now only mildly warm by comparison! I swear it feels like my engine temps have dropped at least 50 degrees! This has gotta be a good thing for my engine, and I would tell anyone thinking of a Stage One.................DO IT!!!