When I bought my FXDC I put Screaming Eagle Street Performance Slip-on mufflers on, boy what a disappointment. I have decided to go with the Vance & Hines Big Radius 2 into 1 exhaust. Over the summer a friend installed a set of Vance & Hines Short Shots, he went with a stage 1 and had it dynoed by the dealer. It seems like it really vibrates bad now, I really don't want mine to do this. Can anyone who has the V&H Big Radius let me know if there Dyna has started vibrating worse after this install?

 

What kind of vibration are you hearing? Is it a fast tin sounding vibration?

Im asking because I have the 2-1 on my bike and I got a little vibration but it was the high pitched tin sounding one. Turned out one of the heat shield clamps wasnt tight enough and was rattling underneath. That was all it took to quiet the thing down.

 

I think it was an article by Joe Minton that mentioned the weight of the mufflers affect vibration and switching to ones much lighter (maybe heavier as well) can cause increased vibration. Wasn't the vibration issue in Switchbacks was traced to the exhaust?