🔥 Roar louder, clear higher — the ultimate Jeep upgrade awaits!
The Flowmaster American Thunder Axle-Back Exhaust System is a precision-engineered upgrade for 2007-2018 Jeep Wrangler JK models with 3.6L or 3.8L engines. Featuring 2.5" mandrel bent 409 stainless steel tubing and a polished 3" 304 stainless steel tip, it delivers a dyno-verified 5 HP and 7 lb/ft torque increase while enhancing ground clearance for off-road adventures. Designed for easy installation using factory hangers, it produces a moderate, deep exhaust tone that balances performance with everyday drivability.
| ASIN | B08W8W2Z5C |
| Best Sellers Rank | #96,081 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Axle-Back Exhaust Systems |
| Customer Reviews | 4.0 4.0 out of 5 stars (69) |
| Date First Available | 3 July 2022 |
| Finish type | Polished |
| Item Weight | 2.72 Kilograms |
| Manufacturer | Flowmaster |
| Manufacturer Part Number | 817942 |
| Manufacturer reference | 817942 |
| Product Dimensions | 73.66 x 26.67 x 13.97 cm; 2.72 kg |
| Tip description | single_wall |
W**Y
Mine came in good shape, welds were good. It doesn't sound like a fart can on a civic like some comments said. I had a cat back dual exhaust and it was louder than this pipe. It sounds good, deep tone at idle. Louder when you floor it but not bad at all. I recommend this pipe!
C**Y
Installed on a 16 Jeep Jk with the 3.6 It sounds nice. Not too loud but gives it a little noise with a nice tone. The only thing I didn’t like was it has a nice chrome tip on it, but the pipe is so short, it dumps out under the Jeep where you can’t see it. Not a big deal at all and is still worth it. It fit perfectly though…down to the exhaust hangers holding it. I would recommend.
R**M
Item is as described. Good quality. Hated the sound. Drove it 100 miles and sold it. Spend a bit more and get a dual pipe with high flow muffler.
A**R
Gives my jeep a good sound. If you take it easy on the throttle it's not real loud. If your hard on the throttle it sounds like a mustang. 🤣🤣 Installation was easy. Made from good materials.
S**F
2015 wrangler 3.6. Easy install. If you take your muffler off for a day you will get an idea of how this will sound on your Jeep. It’s actually a little louder with this installed believe it or not. It is high clearance and tucked up tight. Only time it is going to sound good is if your are getting after it, Brraapin it up. Other then that, it’s kind of annoying. I will most likely find a way to quiet this down a little somehow and install another resonator or something. 4 stars - but know what your getting.
