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Flowmaster Super 44 Series Mufflers - 8425454

Dual Inlet / Dual Outlet
  • $94.95
  • 1-Year Lower-Price Guarantee
  • Free Shipping
  • Ships Between 1/23 - 1/25


  • Part Size:
    2.5" Inlet/2.5" Outlet
  • Style:
  • Part #:
  • Made in the USA
  • Flowmaster Part #: 8425454

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Flowmaster Super 44 Series Mufflers Part #8425454 Customer Reviews

Average Rating

7 Customer Reviews

always flowmaster

Reviewed by Chance H (Mifflintown, PA) Reviewed for a 2013 Toyota Tundra — Feb 20, 2018 7:58 PM

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Only ever and will ever run flowmeter. Best sound,quality,price

Duel in/out

Reviewed by Shannon D (SCHENECTADY, NY) Reviewed for a 2008 Toyota Tundra — Sep 05, 2017 5:39 AM

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I ordered the super 44 hoping it would make my 08 tundra 5.7 sound like a truck. I can say it is what I was looking for. It's quiet at idul but u can hear it when u hit the gas at both slow or heavy acceleration. Some drone at 60-65mph but I like it. Not overly oppressive in cab so u can still have a convo without raising your voice.

Sounds awesome

Reviewed by Cody N (Columbia, MO) Reviewed for a 2004 Chevy Silverado — Jun 14, 2017 6:29 AM

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Bought this muffler dual in dual out ad had it installed on my 04 Silverado SS along with 2 thunderbolt high flow cats. The first time I started it up it startled me in a good way. The sound was everything I was looking for. It's pretty loud but I love it, sounds like a beast

Great sound and superb quality.

Reviewed by Steven E (Salmon, ID) Reviewed for a 2010 Dodge Ram — Mar 17, 2017 10:34 AM

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I spent many evenings and weekends searching for the right exhaust setup for my 2010 Dodge Ram with the 5.7l Hemi.Finally I narrowed it down to this one in stainless. I got exactly the sound I was looking for, and the two in two out saved me money as I did not have to buy two since I wanted to run dual manifold back. I did not need a crossover as well since the two pipes meet in this muffler. With a K&N air intake the whole thing looks great, sounds great and feels great driving.


Reviewed by shane g (CALDWELL, ID) Reviewed for a 2008 Suzuki XL7 — Mar 10, 2017 11:44 PM

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Bit hard put on but still easy to do.

Super 44 dialing and out

Reviewed by Robert B (TAYLOR, MI) Reviewed for a 1998 GMC C/K 1500 — May 04, 2016 4:55 AM

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Great delivery, excellent price, easily installed. And the rumble everyone loves.


Reviewed by BRAD W (LEANDER, TX) — Sep 09, 2015 11:18 PM

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Exactly what I wanted. Deep rumble but not too loud to be obnoxious