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Dynomax

Dynomax 39447 Stainless Steel Exhaust System

    • Based on 30 reviews
Condition: New
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$335.30 Why this price?

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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Jun 13
Order within 16 hours and 57 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: ‎14.75 pounds


Product Dimensions: ‎52 x 14.75 x 10.5 inches


Country of Origin: ‎USA


Item model number: ‎39447


Exterior: ‎Stainless Steel


Manufacturer Part Number: ‎39447


OEM Part Number: ‎39447


Date First Available: September 1, 2004


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jun 13

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.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Hole in my muffler?
Right out of the box the welds look crappy and like they'll easily rust out, so I put some high heat spray paint over them. It's barely louder than my stock exhaust but not in a good way, it just sounds like a hole was put in the muffler. It drones too, it's not too bad, I'm never annoyed by it, but how much it drones for how loud it is is pretty bad. Tunnel runs are super disappointing because it sounds exactly the same in and out of tunnels, there's no echo at all. The only reason I gave it more than one star is because it fits perfectly, everything lines up and it's a super easy install. ... show more
Reviewed in the United States on October 2, 2019 by DumpsterJedi
    • Easy Install - Great sound
This system is easy to install in less than 1 hour. 5/8-inch and 9/16-inch wrenches bring everything together. You'll love it...
Reviewed in the United States on April 21, 2022 by Dan
    • Sounds Much Better
Thanks for allowing my husband to fix his truck. This part worked great. I can still hear him coming but it's back to the much milder (not broken) sounds of the muffler. This was a great purchase.
Reviewed in the United States on August 28, 2020 by Jennifer
    • Great product, terrible manufacturer.
The Exhaust Is great, Dynomax however has the worst customer service I have ever had to deal with. I went with Dynomax mainly because of the price and a rebate offer at the time, I never received my rebate. Trying to get my rebate was a waist of time, the Customer service representatives I talked to were super rude and argumentative. It is an exhaust so it's function and install are simple. I have a 2008 tacoma access cab long box, I had to trim about 8-10 inches off the exhaust. The hardest part of the install is removing the rubber exhaust clips. I used WD40 and wedged a screw driver in to pry it off, the rubber clips have alot of play so don't worry to much about breaking them. The exhaust has a nice idle sound and does not make your V6 truck sound like a car from the Fast and the Furious at higher RPM's. All and all i really liked the product before i talked to Dynomax, I would hate to have an issue with one of Dynomax's products and try to get it resolved with a customer service of their caliber. Spend the extra money and buy from a manufacturer that is % 100 behind their product and company. I plan on looking for another Exhaust so I can get the Dynomax Logo off my truck. ... show more
Reviewed in the United States on December 30, 2014 by jake
    • Nice sound
The media could not be loaded. I purchased this system for my 2006 X-Runner and I am very happy with it. It was really easy to install and fit perfectly. I only had to trim off about 9 inches of the straight pipe. Would definitely recommend this system
Reviewed in the United States on February 15, 2021 by Cannon B.
    • Louder than stock exhaust.
2011 Tacoma DCLB 4x4. Installation was easy. The exhaust is throaty and performance sounding.
Reviewed in the United States on December 28, 2019 by Steven
    • It's quite loud when going up hills at highway speeds and can start to get annoying. If you like that sort of thing then ...
If your looking for a quiet exhaust this is not it. It's quite loud when going up hills at highway speeds and can start to get annoying. If you like that sort of thing then it's a good deal. I ended up swapping out the muffler for something quieter.
Reviewed in the United States on January 14, 2017 by Janice
    • easy instal and sounds good
First off it is much louder then i had expected and oddly enough it is louder in the driver seat then the passenger. The instal was easy i just pulled my trucks back tires up onto a curb and crawled underneath it, just have no clue what todo with the stock exhaust
Reviewed in the United States on December 30, 2013 by Anderson

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