MBPR 4″ XP Series Turbo Back Exhaust GM Duramax 2001-2007 6.6L | Exhaust GM Duramax | S6004409


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Product Description:

The MBPR 4″ XP Series Turbo-Back Exhaust System (S6004409) is the performance exhaust of choice for your 2001-2007 6.6L Duramax LB7 who needs a system that can take anything that the road throws at it. This system’s rugged sixteen gauge T409 construction can be counted on to withstand everything from salt to rocks, tar to grime. We have had such success with this line that we back it with a Lifetime Warranty.


With your MBRP performance exhaust, you can make that happen with up to18 HP more horsepower and 28 ft/lb more torque. Give your truck more pulling power and a much improved throttle response.  The secret to getting more out of your diesel engine is to give it lots of cool, clean air. The only way that you can get fresh air in is to get the hot air out. From the spiral louvered high flow muffler to the fully mandrel bent tubing to minimal bend degree angles, your MBRP performance system gets exhausted out fast. Drop exhaust gas temperature by up to 200°F and set the stage for all the performance you want. An MBRP performance exhaust system is the starting point to getting the most from cold air intakes, programmers, modules, and downloaders.



  • 2001-2004 GM 6.6L Duramax LB7



  • 4″ Stainless Steel
  • Easy Installation
  • Improved Throttle Response
  • Increases 18HP & 28ft/lb Torque
  • Lifetime Warranty

Additional information

Weight 34 lbs





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