Freedom offers a handful of 4" mufflers such as their Classic 4" slip-on mufflers. This muffler has a 4" muffler can that is finished off with a slash cut at the end tip. They will give you the right amount of sound which isn't ear piercing but created a low deep rumble that allows you to still hear your radio bumping. 4" muffler body Optional quiet baffle 85-88dbs Low rumble, stereo friendly 1-year manufacturer's warranty