RPM has taken scale realism to the next level with the addition of these chrome sedan exhaust tips. These tips were designed to add concours winning looks to any electric R/C vehicle. These are NOT working exhaust tips. Our Fatboy looks exactly like a 4” dia. chrome tip found on many full size sedans. The tip screws on to a 1/8ï¾” thick, mock, black, round muffler that has an offset tab for the entire system to be mounted to the body using double-sided foam tape or with a screw.