I have an '07 Street Bob with Vance and Hines Big Radius 2-2 and I was thinking of pulling out the baffles and adding the Thunder Torque inserts to try and get a little more low end torque. Does anyone have these installed and are they worth pulling the baffles or should I just keep the baffles? I am not against going louder by any means either.

 

The DK Custom Products Thunder Torque Inserts will help restore your low and mid range performance by increasing exhaust gas velocity and scavenging; the TTI's help prevent reversion of fresh air in to the pipes which is a common problem with free flowing exhaust systems.

The TTI's will deepen the tone of your pipes and help remove that bright raspy sound you can sometimes hear in V&H exhausts leaving a deeper more resonant tone. There was a multi-page discussion on the TTI's and the Big Radius pipes in the Dyna section, forum member Eprez posted up some images of the W158 TTI's with baffles removed HERE

 

Great thanks for the info.