The MBRP exhaust systems, offered by Black Cloud Diesel, for the General Motors Duramax diesel are manufactured to replace the original equipment exhaust system components on any 2001 through 2005 Duramax diesel equipped pick up. The Duramax system is a complete four-inch mandrel bent T-304 or T-409 stainless steel system that includes the Spiral Flow core muffler and an optional five-inch T-304 polished stainless steel, rolled edge tip (Dual wall tips are standard on T-304 stainless steel systems). The system has been designed to accommodate any of the various cab and bed length pick up bed designs currently produced by General Motors.

The Duramax system begins by increasing the tubing size to four-inches and by using the same style factory four bolt flange and using factory style hardware to ensure an easy installation of the system. The intermediate pipes have welded T-304 stainless steel hangers that guarantee a correctly aligned installation.

The Duramax exhaust system has been dyno tested to produce as much as 25-horsepower and 39-foot pounds of torque. While at the same time lowering your exhaust gas temperatures up to as much as 200 degrees, and spooling up your turbocharger dramatically quicker. The horsepower and torque gains are extremely important but the ability of an exhaust system to lower your exhaust gas temperatures so you can add other performance improvements is of prime consideration for your engine. There are also some mileage gains to be realized, based on your driving style and location.

The T-304 stainless steel systems are protected by an exclusive Limited Lifetime Warranty policy, to the original purchaser. The T-409 stainless steel systems are protected by a five year warranty to the original purchaser.