MBRP 4" Performance Series Downpipe-Back Competition

11 - 15 6.6L GM Duramax



Designed to provide maximum performance and maximum value our Performance Series features 100% aluminized steel at a no nonsense price. These systems are designed to provide the MBRP performance and sound you've grown to love to those who are operating on a tight budget. Featuring a two piece tail pipe and bolt on hangers these systems fit and perform just like our more expensive series at a price point that cannot be beaten. All MBRP Performance exhaust systems are designed and manufactured to the same exacting specifications regardless of material grade.

  • Features
  • Videos
  • Instructions
  • Vehicle Fitment
  • Entry level aluminized steel construction
  • Comes standard with MBRP's smaller muffler
  • More raw aggressive sound than premium products
  • 1 YR Warranty

This product is not available for sale in the state of California.

Year Make Engine


Chevy/GMC 2500/3500

6.6L Duramax