I have a LoudMouth, and I would like to replace the resonator with a Sweet-Thunder chambered muffler (http://www.sweet-thunder.com).

What size do I need, 18", 24", 30".

I'm guessing the diameter should be 3", cuz that's what the LM is.

What's the difference in the lengths, i.e. a longer muffler does what? (sorry if that's a dumb question)

Thanks!

 

Longer is quiter. I believe the resonator is 18"

 

Loudmouth resonator is 12 inches long. I replaced mine with a dynomax race bullet.

 

Thanks man. 18" length 3" diameter it is!

 

Cool, I'm going to try that chambered one first and see how that goes.

 

I would use the 30in in length. It will fit and make your exhaust note deeper and less raspy. Thats the way I would go.