I was looking at the GMMG ehxuast and had a few questions to those who have it. Is it 3in all the way through the mufflers or does it go back to 2.5in where it goes over the axle? I was just wondering if the mufflers they use neckdown as much as the sweet thunder mufflers since they seem similar. Any input is appreciated.

Brian

 

they go down to 2.5"

 

i thought they were 3" up to the muffler, then 2.5" after the muffler

 

3" intermediate pipe and 2.5" after the muffler.

 

the muffler is 2.5 too