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Gibson Exhaust Systems Part #65638 Customer Reviews

Average Rating

5 Customer Reviews

Great Exhaust System

Reviewed by Jacob B (La Crosse, WI) Reviewed for a 2011 Chevy Silverado — Jan 14, 2017 7:21 AM

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Great system for my truck, stainless looks good. Great sound and performance very little drone none driving around town and barely any on the highway. Definitely recommend buying different clamps if you are going to install this yourself, buy quality band clamps 2-2.25" and 2-3" clamps the ones included aren't very good compared to the exhaust. Also directions tell you to reuse the v-clamp off your stock exhaust by the cat and they are almost always rusted on so buy a new one of those as well.

You can feel the added hp

Reviewed by Jody G (COLLIERVILLE, TN) Reviewed for a 2012 Chevy Silverado — Apr 03, 2016 5:16 PM

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Had a little trouble getting it to seal to the factory pipe , but after that the rest of the installation went well. The sound is just right, not too loud with a little bit of drone inside the cab and only slightly louder than the factory system at cruising speed. I really like the way the dual tips exit side by side behind right rear tire.

Very nice exhaust.

Reviewed by Michael E (DAYTON, OH) Reviewed for a 2013 Chevy Silverado — Jan 12, 2016 6:06 PM

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Easy to install, nice sound and doesn't run loud when cruising.

Gibson Cat Back Exhaust on 2010 Silverado Z71 Crew Cab w/5.3L

Reviewed by Eric N (EAGLE, WI) Reviewed for a 2010 Chevy Silverado — Apr 27, 2013 6:33 AM

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2 of 2 people found the following review helpful.

Ordering and shipping went without a hitch. Installation took about an hour start to finish. All pipes, hangars, and clamps were quality and fit exactly in factory hangar locations. No modifications necessary. Sounds great! No issues when AFM kicks in. Haven't checked if there is a change in mileage as of yet.

4 th Gibson

Reviewed by Bill F (IOWA CITY, IA) Reviewed for a 2015 Jeep Cherokee — Jul 10, 2011 6:52 AM

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4 of 4 people found the following review helpful.

I always use Gibson for performace, great sound, looks good and lasts

Gibson Exhaust Systems - 65638

Cat-Back Dual Sport Exhaust
  • $264.20 - $1,781.70
    • On Sale: 15% Off
  • $224.57 - $1,514.45
  • Free Shipping
  • Ships Between 3/27 - 3/29
  • What Do You Drive?


  • Style:
    2.25" Dual swept side exit (Stainless)
  • Part #:
  • Exits Behind Passenger Side Rear Tire
  • Tubing diameter: 2.25" aluminized mandrel bent tubing
  • Muffler specifications:
    • Inlet: 3.00" center
    • Outlet: 2.25" dual
    • Body height: 4.00"
    • Body width: 9.00"
    • Body length: 18.00"
    • Body shape: Oval
    • Exhaust sound: Aggressive
  • Tip specifications:
    • Inlet: 2.25"
    • Outlet: 3.50"
    • Length: 12.00"
    • Finish: Polished
    • Material: 304 Stainless steel
    • Shape: Round
    • Cut: Slash-cut
    • Attachment: Clamp-on
  • Download installation instructions (PDF)
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