Dynomax Ultra Flo 39311 Exhaust System Kit Fits select: 1999-2007 CHEVROLET SILVERADO, 1999-2007 GMC NEW SIERRA

from Plankwalker

This is a great cat back for the $$. Fit great, easy to install, and sounds good.

from Ben E

I just put this on my 05 Silverado 5.3 extended cab and it looks and sounds great. Super easy install with no screwing around to get it to line up and fit right. Has a great idle sound and gets decently loud under load. I was also impressed with the quality of hardware it came with, the two clamp...

from Dfish10

Installed on '06 GMC crew cab. Yes it will fit on crew/short bed same as ext/std bed. Both are 143.5 wheelbase, which is the key. Directions don't spell out both config. This has a nice sound, aggressive but not too loud as others have said. That of course is subjective. Install was easy after ge...

from Genevgjwbbv

Very easy bolt on install. Everything fit well and looks clean. Has a nice deep sound.

from Meyer90

I bought this exhaust for my 2006 Silverado 5.3L and couldn't be happier. It sounds 10x better than stock exhaust! It's not straight pipe loud, maybe just 2 notches under that. Highly recommend this exhaust to anyone. Very easy to install