MBRP 4" XP Series Cat-Back Exhaust System S6000409

2001-2005 GM 6.6L Duramax (All Crew & Ext. Cabs)

Customer Reviews - Include your order number for a chance to win a $100 GiftCard

(19 Ratings, 7 Reviews) Average Rating:
Great Sound
Blake (Virginia) 3/22/2010 6:55 AM
Just bought the exhaust system and it was a quick and easy install. The only hard part was getting the stock exhaust off, other than that it was a piece of cake. Great tone and sound to it when you are just driving slow or when you stomp on the pedal the roar is amazing. Love it!!!
mike darosa (Taunton , MA) 3/17/2010 5:47 PM
installed on a 01 XC LB GMC quick, easy and sounds amazing GREAT PRODUCT!
Dually Driver
Kameron (Kansas) 5/10/2009 5:27 AM
Instant Difference, I combined it with the Volant Cold Air Box and the Edge Tuner I bought on XDP the fuel saving and performance is great.
Excellent exhaust system.
John (Mesa, AZ) 1/1/2009 11:26 PM
Installed on 06 CC SWB 4X4 GMC myself. It only took about 1hr. Greatly reduced turbo lag, turbo whistles more(I like that), and power gain is very noticeable. It also sounds really good, gives truck a nice growl. I would definitely recommend this system.
Anonymous (Unknown) 2/17/2008 8:32 PM
I installed it myself on an '06 D-Max LBZ. I ordered it w/ the down pipe, and it sounds AWESOME!! The truck seems to have some more power and doesen't lag as much when you stand on the throttle.
great system
camron (Unknown) 10/25/2007 7:08 PM
overall easy intstall, great look and comes with a real great agressive sound...glad i bought it with the muffler delete pipe...
finally no "drone"!
edge (Unknown) 10/4/2006 8:37 AM
this is the third and final exhaust i will ever buy. i've used gibson and flo-pro and gotten that annoying "drone" with both. after installing the mbrp i can finally drive in peace w/ the windows open. the other great part is that the muffler is reverse-able which enables you to be able to change the sound just by turning it around.