Reviews for Flowmaster 817837 2.5" American Thunder Axel Back System for 18-20 Jeep Wrangler JL with 3.6L

Sounds great, cheap price.

Technically not street legal anymore, however.

Tried to put it on myself but the OEM muffler was a huge pain in the rear, took it to a shop and we got it swapped in 1 hour. Mostly because the OEM muffler had a stuck bolt, and the pipe was slightly mismatched in diamater, so it took a little hammer and saw massaging to get them to accept each other.

None of this was the fault of this product, probably just heat-stretched exhaust that made it take twice as long as it should have.

EASY INSTALL AT ANY SHOP...SOUNDS SO MUCH BETTER! EASY INEXPENSIVE SOLUTION! WEEKEND DRIVER'S PERFECT SOLUTION!

Kinda cheated on this installed by local muffler shop for $50. Still cheaper than the MBRP set up I had before on another jeep and sound way better too. I have not had the issue of overheating the tow connection.

I installed this on my JL with relatively very low mileage. The stock muffler was very easy to take off. This axle back kit was pretty simple to install. My only complaint is that the inlet of this pipe wasn't opened up large enough to fit over the stock exhaust pipe. I had to hit it with a hammer a bit to widen the opening some, then it slide right over it with no problem. Total install time was about 1.25 hours. Thanks to the removable hanger flanges, Jeep made this process so much easier in the JL than it was in the JK. Now lets talk about the sound, I think it's great! It's subtle around town if you stay under 3,000 rpms. However, if you get the on the gas hard or go over 3,000 rpms the sounds begins to get more moderate to slight aggressive. I haven't noticed any drone on the highway. This is one of the best bangs for the buck in terms of exhaust options for the Jeep JL.

Fairly easy to install. Just hard to slip over OE exhaust pipe. Sounds awesome!

nice, simple and easy for rear delete of catback

Great sounding exhaust! Its quite a bit louder than stock and has an aggressive tone when you floor it. It was relatively easy to get the stock exhaust off. Getting the new one on was more difficult. The flare on the Flowmaster exhaust wasn't wide enough to fit over the stock exhaust. A flaring tool wouldn't work either, so it required welding at a muffler shop. Hence the 4 star rating. Otherwise it has been great.