Very good quality, louder than expected. I used 2 of these on my 2017 Golf Alltrack, first with the factory resonator removed and then had to put it back in because it was so boomy. Now that the resonator is back in place and I've welded 3.5" double wall Magnaflow tips with 2.5" inlet to these mufflers, the sound sounds great. These are through mufflers. So if you don't need a loud I would go with one of the other MagnaFlow products. I've used them mostly for lack of space and looks, but I'm warmed to the sound and get lots of compliments.