acstone7

Is there a difference between the Super 40's and the American Thunders? [&:]

petepete

apparently super 40s are louder. never heard them though

localgod11

Sorry but the only difference is that the american thunders have the hangers already welded on that is all

petepete

ah yes your right i was going off a post i read wrong earlier super 40s are thunders while originals are different? Maybe im wrong i have no clue im saying nomore

Black06stang

you are correct

fazm

when i bought mine the description was "Flowmaster Super40's (American Thunder)"

localgod11

american thunders = super 40s

series 40s are different from the other 2 ALL sound good on an 05+ sixer, If you have a good stereo check out the sound clips section and shop around a bit, flows WILL drone around 2-3k people have had varying sucess using resonators to get rid of the drone, Flows will definatly be the cheapest as many muffler shops can fab you up everything you need about including and H pipe for around 350-450 anything more and your overpaying. Thats a simple setup and will get into the game if you want to change your setup later on i.e. different mufflers or a prochamber. I have the series 40's and think they are the cats ***.

Just a note since the performace gain from duals on a sixer in non-existant you should stick with and H-pipe as they gove the exhaust a deeper sound.