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Gibson Exhaust Systems - 65657

Cat-Back Exhaust
  • $672.99
  • Free Shipping
  • Ships Between 12/28 - 1/02
  • What Do You Drive?


  • Style:
    2.25" Dual split rear exit (Stainless)
  • Part #:
  • Exits from factory location
  • Tubing diameter: 3.00" / 2.25" stainless 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: 4.00"
    • Length: 12.00"
    • Finish: Polished
    • Material: 304 Stainless steel
    • Style: Rolled
    • Cut: Slash-cut
    • Attachment: Clamp-on
  • Download installation instructions (PDF)

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Gibson Exhaust Systems Part #65657 Customer Reviews

Average Rating

4 Customer Reviews

Great Exhaust, Sounds / Looks AWESOME!!!

Reviewed by Christopher P (BETHPAGE, NY) Reviewed for a 2015 Chevy Silverado — Dec 26, 2017 6:52 AM

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I was looking to get an exhaust to make my truck sound a little more aggressive. I was not disappointed. WOW...It was louder than I expected. The exhaust looks and sounds GREAT.The installation was easy. The hardest part was removing the stock exhaust. The directions from Gibson are clear and easy to follow. Do yourself a favor if you are going to install using the clamps go to your nearest auto part store and pick up five heavy duty exhaust clamps, the clamps provided are cheap.

Good product for the price

Reviewed by Braxton B (RICHMOND, TX) Reviewed for a 2017 Chevy Silverado — Dec 11, 2017 4:56 PM

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Sound is low at idle but really wakes up when heavy on the gas. Quality appears to be good so far, especially for the price compared to other exhaust. MPG slightly increased when driving in the right lane!

Cat-Back Stainless Split Rear Exhaust 2017 GMC Sierra 1500

Reviewed by Andre K (Boca Raton, FL) Reviewed for a 2017 GMC Sierra — Dec 08, 2017 3:27 PM

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Good looking system & easy to install with right tools & equipment. Sounds good too, nice rumble without being obnoxiously loud. 2 gripes: 1- The front of the headpipe is not flared quite enough so it is a bit of a problem to get a proper seal when clamping it back at the ball flange using the stock clamp. 2- The 2 exit pipes were difficult to clamp. Stripped thread on clamp when tried 1st time. Had to set clamp bottom part to overlap joint so that Tailpipe and Exit was grabbed simultaneously.

Has a nice rumble

Reviewed by Ken R (ROANOKE, TX) Reviewed for a 2015 Chevy Silverado — May 04, 2016 9:46 PM

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Easy to install. The stainless tubing require extra torque to fit pipes. Looks good and sounds like a performance exhaust on wide open throttle. Has a little bit of drone in the cab.