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Dynomax

Dynomax 39311 Stainless Steel Exhaust System

    • Based on 29 reviews
Condition: New
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$462.55 Why this price?

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Feb 1
Order within 20 hours and 37 minutes
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Features

  • Stainless steel construction for lifelong protection
  • 100% welded design for maximum durability
  • Straight through design ensures unrestricted exhaust flow and reduces back pressure
  • CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone
  • Dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower.

Description

DynoMax Ultra Flo Welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) Technology to absorb unwanted interior resonance while maintaining a deep performance tone. The 'Pure Unadulterated POWER' of DynoMax Ultra Flo Welded mufflers are backed by a Limited Lifetime Warranty and exclusive 90-Day Performance & Sound Guarantee. All Dynomax Performance Exhaust Systems bolt on for easy installation. Your vehicle's complete exhaust can be quickly and easily customized with an emissions-legal premium performance system from Dynomax.


Manufacturer: ‎Dynomax


Brand: ‎Dynomax


Item Weight: ‎43 pounds


Product Dimensions: ‎66 x 13.75 x 15.8 inches


Country of Origin: ‎USA


Item model number: ‎39311


Manufacturer Part Number: ‎39311


OEM Part Number: ‎39311


Date First Available: December 7, 2010


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Feb 1

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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews

    • Read this Review
Installed this on a 2000 Silverado extended cab. Let me start by saying i did a ton of shopping around online, and for the price and being stainless i figured i would give this exhaust a shot. Am i glad i did! First this is a way more quality set up then whatever brand/style was previously on my truck. Once we got the old exhaust off, (that was a pain in the rear) the install literally took 15 minutes with the help of a friend. I was really impressed with the band clamps it came with. They are so easy to use and such an upgrade, i doubt i will ever use another "regular" exhaust clamp again. Sound is subjective to each individual, but to me the exhaust sound isn't too extreme. It will not (shouldn't) wake up the neighbors, but it does have a nice low end growl and a little bark when you first start it up. I didn't notice any drone, and could barely hear the exhaust at highway speeds. You will definitely hear it if you stomp on it. To me this is what a truck should sound like. For the price, quality, sound, and 2 day shipping I doubt you will find a better deal. Add in it's stainless and will most likely outlast the rest of the truck, and you have a winner. ... show more
Reviewed in the United States on September 11, 2014 by Lucas A. Seidel
    • Perfect fit, a little loud for me.
I put this catback kit on a 99 Silverado 3-door extended cab w/ 5.3L V8. Installation was very very easy. The center and tail pipe are bent perfectly. There are two hangars close together on the aft end of the tail pipe but my truck only uses one of them. I guess the other one is for other year models. I really like the clamps that come with this exhaust. They are a whole lot better than the typical horseshoe clamps that most exhausts have; they don't leak at all. I would prefer the exhaust came with the conical end on the hangars but the hangars are a good fit and I haven't had any problems with the exhaust staying put. The only part of the exhaust that is polished is the end of the tailpipe in case you were wondering. The muffler is smaller and shorter than the stock muffler and sits further forward with this kit. It is a 2000 scfm muffler with a straight through design. You can literally look in one side and see out the other. The muffler is round and has a perforated straight pipe running down the center. It has roving fiberglass between the pipe and the outer shell. The welds are really good and it has the Dynomax name large and deeply stamped into the stainless. The center pipe and tail pipe tubes are two different sizes so you can only put it in one way. It is much louder and deeper than the stock exhaust when accelerating. I get a deep rumble when starting the truck. Sounds the same as stock when coasting. I actually prefer the quiet stock exhaust but my truck enthusiast friends say it finally sounds like a truck. I bought this when the price was $198 and was the best price for a completely stainless catback exhaust on the net. This same exhaust sells for cheaper than the current Amazon price if you do a little looking. Price still isn't bad considering the lifetime warranty. ... show more
Reviewed in the United States on March 8, 2012 by G. Roth
    • Nice kit. Nice sound. Bad clamp.
I'd have given it 5 stars, but the clamp for the tip was worthless. Like. Completely. Totally. Worthless. Installation was a breeze. Did it on the ground by myself with simple hand tools. I love the sound. Tiny bit of drone at low RPMs, not at all loud. I'll have to find time to weld the tip on as the clamp no workie workie. For clarity's sake, let me say, the two band clamps that attach the muffler...No issues there! I wouldn't hesitate to buy this kit again. ... show more
Reviewed in the United States on February 25, 2017 by Barry D. Morrison
    • Great Exhaust at a Great Price
I bought this exhaust for my GMC Serria. It was very easy to install. It took about 30 minutes and bolted right up. The truck does have a much more aggressive sound to it especially after 2000 RPMs. The only drawback is that at 70+ miles per hour the exhaust is a little loud going down the interstate. So if you do a lot of highway driving then I would think twice abotu it. Other than that it is great and I would tell anyone to buy one. ... show more
Reviewed in the United States on September 9, 2012 by Andrew D
    • Best price by far that you will find for any ...
Best price by far that you will find for any single side mandrel bent stainless steel exhaust! Fast shipping and great quality. This kit came with quality clamps too and a perfect fit to the factory downpipes on my 02 GMC Sierra with the 5.3l vortec engine. The sound of the ultra flow welded muffler is exactly what I wanted and gives you a deep sound under load with minimal drone and a nice sound at idle. 5 star all around ... show more
Reviewed in the United States on March 31, 2016 by Amazon Customer
    • Very dissatisfied.
Review Image by Mark
Review Image by Mark
Review Image by Mark
Review Image by Mark
Review Image by Mark
Review Image by Mark
I bought this exhaust "new" and I get a pile of poorly packaged, rusted, dented, scratched and very evidently used piece of scrap metal... The only quality looking part of this exhaust was the stainless tip (which had a quarter size dent in it....) refunded.
Reviewed in the United States on December 27, 2018 by Mark
    • Can't beat it for the price!
Replaced 8 year old aluminized cat-back that BADLY rusted out. This 300 dollar stainless steel exhaust was to good to turn down...I was pleasantly surprised by the quality of this exhaust and it lined up VERY Nicely. The only issue I had was the RUSTY flange bolts that snapped right off but...they torched right out. The exhaust has a nice rumble, but not too obnoxious. I did the entire install by myself in about 2 hours. Great Deal! ... show more
Reviewed in the United States on September 13, 2013 by Charles Vesolowski
    • You can't beat it!
I search for the best value for my money. Don't waste your time looking. This is a great system very nice sound to it, and a really nice chrome tip that comes with it. And this was way cheaper then systems that are not Stainless steel.
Reviewed in the United States on June 20, 2013 by Dave

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