I've had the 2-up seat installed as well as passenger foot pegs and have ridden hundreds of miles with myself (295 lbs) and my wife (150 lbs). The bike runs GREAT and it is as smooth as riding single...except over big bumps. I had fun blowing a Road King away from a dead stop, me with my wife, he was riding single, during a charity ride this weekend...Thousands of bikes at this poker run and my Rune got a good piece of the attention...Interesting side note, some of the guys I rode with loved the sound of my bike from behind, said it sounde like a jet turbine engine...I of course can't hear how it sounds while sitting on top of it, but that made me feel good!