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Flowmaster

Flowmaster 817916 Outlaw Extreme Cat-Back Exhaust Kit 3 Inch 409 Stainless Steel Black Single Dump Style Turndown Compatible with 2014-2019 Classic Body Chevy Silverado GMC Sierra 1500 4.3L 5.3L

Based on 68 reviews
Condition: New
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$467.95

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This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027

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Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Nov 12
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At a glance

Condition
New
Dimensions
42 x 21 x 14.25 in
Weight
10 lb
Material
Plastic
Vehicle Service Type
Truck
Automotive Fit Type
Vehicle Specific Fit
Shape
Round
In the box
FLOWMASTER Outlaw Extreme Cat Back Exhaust System817916

Features 3

  • Race Proven Outlaw Muffler Technology
  • Extreme Sound for Extreme Lifestyles
  • Stainless Steel Construction

Specs 20

Brand Flowmaster
Material Plastic
Item dimensions L x W x H 42 x 21 x 14.25 inches
Vehicle Service Type Truck
Item Weight 10 pounds
Brand Name Flowmaster
Manufacturer Part Number 817916
UPC 700042039302

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Google Pay
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Top Amazon Reviews

Loud!
Love the sound over the stock exhaust! Took me about an hour and change to do. Worst part was probably getting the existing hangers off on the stock exhaust. Otherwise, it was a very easy install. I have 0 mechanical or car background experience. The sound is loud! It is audible within the cabin and very audible outside the cabin. You're going to love it. Your neighbors will hate it. Your wife will probably divorce you. 10/10 smiles per gallon. If you're on the fence, don't be. It's worth every penny. ... show more
Reviewed in the United States on August 3, 2026 by Noah J.
Flowmaster does it again
Review Image by Iceman
Awesome exhaust for the money. Just as good as any exhaust system. Super easy installation as all you need is a sawzall w/6" metal blade, a file, channel locks and a socket set. Im no mechanic and it took me bout an hour. Now I will say instructions were pretty easy but I would file the inside and outside of the pipe after you cut the muffler off. It will make your instal alot easier, should slip right on and fit perfect. Not too loud either, has a nice deep subtle rumble. I've attached pics and video but I would also suggest a cold air intake, will make it sound even better as I've done mine!! ... show more
Reviewed in the United States on September 16, 2025 by Iceman
Flowmaster does it again
Easy to install, took about 40 minutes, sounds amazing.
Reviewed in the United States on April 7, 2026 by Random
Great sound
Easy to install only took about 15/20 minutes. Left stock cat on and sounds great highly recommended
Reviewed in the United States on July 20, 2024 by Matt
Cheaper than going to a muffler shop
This was definitely a cheaper route than going to a muffler shop. For what it’s worth it sounds ok but with it being so small and virtually having a straight shot it’s a lot quieter than I thought it would be. I’ve had an outlaw muffler on a ram, tundra and now Chevy. They’re all about the same volume. I would say quiet to moderate. If you’re looking for loud this is not your muffler. Don’t get me wrong though, it does sound good. ... show more
Reviewed in the United States on April 26, 2023 by Travis Garrett
Fairly Easy Install. Sounds Great.
Was able to install this very easily. I installed without putting the truck up on jack stands so the only tough part was getting the correct angle with my sawzall under the truck. The exhaust sounds great!
Reviewed in the United States on May 12, 2022 by Mason Tuohy
Regret
It fits as advertised, it’s loud, it drones heavy, nice look, quality material, but you can just cut the pipe and get the same effect.
Reviewed in the United States on March 17, 2026 by Devin C.
Straight forward install
Review Image by Michael bausch
Review Image by Michael bausch
Review Image by Michael bausch
You have to cut off the old muffler first (big large parts) then unclip the stands with W40. Took me about 30min to remove the old one then install took 10min straight ! Make sure to put the lock on flush on the new stand to avoid it to move much
Reviewed in the United States on February 19, 2024 by Michael bausch
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