Anybody can chime in. I am looking at these for a trike? Also wonder if the thunder torque inserts can be added to these to mellow them down if needed.

 

Since no one replied I'll give my opinion/observation. I have never seen a favorable dyno sheet from anything cobra. Not that they might not exist. I've never seen one.
If performance matters, I would do my homework.
TTIs can added to just about any exhaust. The question would be how do they affect performance? It that desireable to what you're looking to do/gain?

 

Thank you for your input. I have since changed my mind… this will be for a newer trike…