Shopping Cart

Your cart is empty.

Your cart is empty.

Flowmaster 818121 American Thunder Axle-Back Exhaust System Stainless Single Exit

Free shipping on orders over $29.99

$427.95

$ 99 .00 $99.00

In Stock

About this item

  • 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
  • A 3.00-inch polished stainless steel tips add a custom look
  • No Drone
  • Includes complete hardware and factory styled hangers in the stock locations for an easy installation
  • Delta Flow Technology Increases Performance and Reduces Drone


Flowmaster 818121 American Thunder Axle-Back Exhaust System Stainless Single Exit


joseph vandervloedt
Reviewed in the United States on March 17, 2025
Got it because it was high clearance and to replace the muffler delete. The muffler delete was too loud, this sounds great on the outside and is about 100x quieter on the inside. It took about 10 minutes to install.
lazaro a perez
Reviewed in the United States on November 22, 2024
excellent
BEN
Reviewed in the United States on June 23, 2023
Ultimately I like this axle back kit. It tucks up nicely, sounds decent, and is about the cheapest option out there. That said, the mounts are terrible. It’s obvious what Flowmaster intended with the design and parts provided but it just didn’t line up on my truck. And I broke 3 of the 4 cheap metal clips just trying to install them on to the hangers. I ended up tapping everything to 1/2-13 and installing top lock nuts to retain the red bushings instead. Do better Flowmaster.
christian
Reviewed in the United States on June 17, 2023
The oem ehxaust is extremely anemic. I have a 22' manual and wanted somethign that could give the truck some character and this exhaust does the job. The tone is not aggressive at all, absolutely no drone what so ever at any speed and it gives the Bronco some much needed guts. Volume is a 4-5, oem 2. Even a few minor gurgles and pops on deceleration. Couldn't be happier. The install is not complicated but the instructions are not intuitve at all. Oddly the hardest part from my experience was placing the stop washers at the end. they are tough to place but will go on eventuall. Highly recommended.
T
Reviewed in the United States on May 17, 2023
Not too loud. Easy to install. Slight modification to the bracket to fit my 2023 bronco. Does not hang low like the stock muffler.
Recommended Products

$827.95

$ 99 .00 $99.00

4.5
Select Option