Gibson Performance Exhaust - Cat-Back Dual Extreme Exhaust (65579)

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This part fits

  1. 2009 GMC Sierra 1500 Denali 6.2L V8 cid:376 cc:6162 Crew Cab Pickup 69.3 in. bed
  2. 2008 GMC Sierra 1500 Denali 6.2L V8 cid:376 cc:6162 Crew Cab Pickup 69.3 in. bed
  3. 2007 GMC Sierra 1500 Denali 6.2L V8 cid:376 cc:6162 Crew Cab Pickup 69.3 in. bed
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About this product

Part #: 65579

For the extremist who wants to take their truck to the next level, this dual bolt-on Cat back system is for you. This system exists behind the rear tires at an aggressive angle with a powerful exhaust tone. You will gain bold street looks with powerful dyno tuned and tested street performance gains. You can expect to experience gains on average of 15-20 horsepower. Gibson muffler provides a mean performance sound and complemented with polished Stainless Tip. Easy bolt-on installation. No welding required. Backed by a Lifetime Limited Warranty. If you want Extreme, this system is it.

More Details

Exhaust TypeCat-Back
Exit PositionDriver Side Behind Rear Tire
Exit PositionPass Side Behind Rear Tire
Inlet Inside Diameter3.500 in.
MaterialStainless Steel
Muffler Body Length24.000 in.
Tail Pipe Diameter4.000 in.
Tip Diameter4.000 in.
Tubing Diameter3.000 in.
Additional Documents
  1. Technical Bulletinjpg
  2. Certificate of Originpdf
  3. Installation Instructionspdf
  4. Warrantypdf
California prop 65 warningWARNING: Cancer and Reproductive Harm

*Some manufacturer restrictions apply.

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Matt Farah

Smoking Tire / The Drive

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Thank you for all the help, really. You guys are awesome. This is all great info and I really appreciate everything you have done to help me with my build.

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Ford Focus ST

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