- 1-Year Lower-Price Guarantee
No minimum order required!
Click to save
Click to enter your email address to receive an
instant personalized ONE-TIME use only promo code!
This policy applies only to activities AutoAnything.com engages in on its website and does not apply to AutoAnything.com activities that are "offline" or unrelated to the website.
AutoAnything.com collects certain anonymous data regarding the usage of the website.
This information does not personally identify users, by itself or in combination with other information, and is gathered to improve the performance of the website.
The anonymous data collected by the AutoAnything.com website can include information such as the type of browser you are using, browsing patterns,
originating web pages, number of visits to AutoAnything.com, vehicle selections, items viewed, pages viewed, and the length of the visit to the website.
You may also be asked to provide personally identifiable information on the AutoAnything.com website, which may include your name, address,
telephone number, and e-mail address. In addition, if a purchase is made, we collect credit card information, billing and shipping address, other customer information,
vehicle information, information regarding prior purchases, and information concerning the dollar amount of the purchase, the date of the purchase, and the specific items purchased.
This information is collectively referred to as "personally identifiable information."
This information can be gathered when feedback or e-mails are sent to AutoAnything.com, when you register for services,
when you voluntarily post information in chat rooms, blogs, message boards or other public forums on AutoAnything.com, when you make purchases via the website,
or when you enter information in the checkout process but do not complete your checkout. In all such cases you have the option of providing us with personally identifiable information.
You may always choose not to provide us with your personally identifiable information, but you then may not be able to participate in the particular activity that requires such information.
If you do provide us with your personally identifiable information, you agree that we may contact you to provide you with information we believe may be of interest to you.
✔ will be deducted from the price at checkout.
Your special offer has been activated and is ready to be used. Your savings will be reflected in cart.
ONE-TIME use only.
HURRY: Expires on
Ships Between 2/23 - 2/27
- What Do You Drive?
Style:Dual rear/dual side exit (409 Stainless)
We’re sorry. The information you have requested is temporarily unavailable.
Flowmaster Exhaust Systems Part #817669 Customer Reviews
24 Customer Reviews
Reviewed by George B (WEST CHESTER, PA) Reviewed for a 2017 Chevy Silverado — Dec 08, 2017 2:02 AM
I installed the flowmaster American thunder exhaust on my 2017 Silverado all went well, my truck sounds great and i did notice an increase in my gas mileage. The exhaust was easy to install, I opted for the side exit rather than the rear exit.
Reviewed by Gary S (Altura, MN) Reviewed for a 2017 GMC Sierra — Aug 11, 2017 6:07 PM
A great product well made just need to be patient matching tailpipe positions and angles. Recommend you tack weld all joints then fully tighten clamps.
Reviewed by Brian C (GRAND RAPIDS, MI) Reviewed for a 2014 Chevy Silverado — May 05, 2017 3:28 AM
The clamps are not the greatest. Went with aftermarket. The sound is not over bearing at cruising speeds. You definitely notice the rumble when you get on it thou.If you can keep your foot out of it, the MPG'S do go up.
Reviewed by Calvin B (HARTSVILLE, SC) Reviewed for a 2017 Chevy Silverado — May 04, 2017 4:44 AM
The install was fairly easy. However, (as previously stated in other reviews) I had to replace all of the supplied clamps with ones purchased from my local auto parts store and added 2 hangers (approx $35), because the supplied clamps are crap (which evidently they know about but keep including them for whatever reason), and t added 2 hangers near the tailpipes to prevent them from rattling. I have had Flowmaster exhausts on previous vehicles and the sound is good, Get stainless steel.
Reviewed by Mike S (SPRINGFIELD, IL) Reviewed for a 2017 GMC Sierra — Apr 12, 2017 6:23 AM
The exhaust sounds great for my 2017 Sierra. Not too loud and cab noise only gets loud while cruising at 75+ but it's not overbearing. The installation wasn't too bad after I got a cheater bar to tighten the clamps. I also added a tuner super chip which is a must if you want to feel the true power your truck is capable of.
Reviewed by Brian F (WOODBURY, CT) Reviewed for a 2014 Chevy Silverado — Feb 28, 2017 7:28 AM
Exhaust system sounds great and was easy to install. I was disappointed with the clamps that came with it since they did not tighten down enough to hold the pipes in place. For a $750 system everything included should work as intended. I had to go to the auto parts store and purchase 5 cheap clamps as replacements. Other than that I would recommend the system.