I am looking to get some big city thunder monster baffles for my vance and hines true duals, does anyone know the diameter measurements of the true duals. ?

 

I'm running BCT Baffles in my V&H Duals on an 02 Fatboy. Great sound and performance! Don't remember the diameter but if you call BCT they have the information. They will also ask you what size t-shirt you wear and send one with the baffles. If you've never ran BCT Baffles before, there is a sweet spot for installation. If memory serves me correctly it's roughly 6 inches from the exhaust tip but ask the question while you're on the phone with them.

 

Gail is the person I spoke with when I ordered my QQ baffles from them. You do drill a hole 6" from the end of the pipe for install. Measuring the pipe is easy enough, just remove the cap and check with a measuring tape.

 

I have a set of these in my V&H Big Radius 2/2 and they sound great. I also reinstalled/cut the stock baffles behind them which is something you might want to look into. I just recently purchased a new set of black V&H Big Shots Staggered and another set of the BCT QQ baffles to do the same thing to. Hopefully Ill have the same results with them..

 

So you're baffled by baffles? ;0)