Gibson Cat-Back Exhaust for HHR

Gibson Cat-Back Exhaust for HHR

Item Code: HH5004

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Product Description

Gibson cat-back exhaust systems are engineered to produce more low-end power and torque than other exhaust systems. This is more useful for street-driven vehicles than the high-RPM horsepower claims made by others. Gibson systems improve exhaust flow and create more power where you need it! In order to reduce turbulence, Gibson spent a lot of time working on the "slip fit" joining of all components. Each pipe fits into the larger opening of the next down stream exhaust pipe. This method contributes little turbulence when compared to "ball and socket" or "flange and gasket" methods, which can create substantial power-robbing backpressure and turbulence at each joint. Worse, a misaligned gasket or socket can actually create more backpressure than your current stock system. Select between aluminized (lower cost, but may tend to develop rust over time) or stainless steel (costs more, but never rusts).


  • 409L Stainless Steel (or Aluminized, select below) Heavy Duty Tubing
  • Mandrel Bent Tubing
  • T-304 Stainless Steel (or Aluminized, select below) Superflow Muffler
  • T-304 Stainless Steel Clampless Slash Tip
  • Zinc Plated 3/8 in. to 1/2 in. Hangers/Clamps
  • Lifetime Limited Warranty


  • 2006-2011 Chevrolet HHR (2.2L and 2.4L engines)
  • Installation Difficulty

    Installation Difficulty 3 View Installation Instructions


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