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Flowmaster 817837 2.5" American Thunder Axel Back System for 18-25 Jeep Wrangler JL with 3.6L

Name: Flowmaster 817837 2.5" American Thunder Axel Back System for 18-20 Jeep Wrangler JL with 3.6L
Brand: Flowmaster
Price: 160.15 USD
Rating: 4.57 (7 reviews)

2.5" American Thunder Axel Back System

Quadratec Part #: 17618-0034

Flowmaster Part #: 817837

Installation
Instructions

7 customer reviews

0 questions answered

Description

If you are planning on taking your Wrangler JL on some of the higher angled trails you might do some damage to your factory exhaust. Flowmaster has developed an axle back system that replaces your factory transverse muffler with a high tucked tailpipe giving you the clearance you need for your off road adventures. Not only will you gain added clearance but you will also get such an impressive sound they had to call it American Thunder. This 2.5" axle back system is made of mandrel bent 409S stainless steel to increase exhaust flow & help prevent corrosion giving you an exhaust system that will withstand the outdoors plus sound great also. An aftermarket bumper is recommended for this axle back system because of how high the tailpipe is tucked.

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Details

T-409 Stainless Steel: Built to resist high temperature corrosion this exhaust will withstand everything from rust to grim ensuring your exhaust will hold up keeping your Jeep sounding great and looking good for years to come.

Full Mandrel Bent Pipe: Is a process that allows the pipe to bend without creases or folds while preventing your exhaust tube flattening allowing for more of a free flowing exhaust.

Performance & Sound: Enjoy a boost in horsepower as a result from the better exhaust flow plus a head turning moderate to aggressive sound that comes out of the 3" polished stainless steel tip.

Installation: This kit comes with everything you need for installation while using some of the factory hardware also.

Installation Notes

Installation Difficulty:

Level 2Intermediate

Installation Time: 1-2 hours

Installation
Instructions

Parts Included

Tailpipe
Clamp

Warranty

Limited Lifetime Warranty.

Features: Aggressive Sound
Color: Silver
Material: T-409 Stainless Steel
Type: Muffler Delete
Shipping Weight: 5lb
Shipping Dimensions: 29in x 10in x 6in (L x W x H)

Jeep Wrangler 2-Door (JL)
2025 Jeep Wrangler 2-Door (JL)
2024 Jeep Wrangler 2-Door (JL)
2023 Jeep Wrangler 2-Door (JL)
2022 Jeep Wrangler 2-Door (JL)
2021 Jeep Wrangler 2-Door (JL)
2020 Jeep Wrangler 2-Door (JL)
2019 Jeep Wrangler 2-Door (JL)
2018 Jeep Wrangler 2-Door (JL)

Jeep Wrangler Unlimited 4-Door (JL)
2025 Jeep Wrangler Unlimited 4-Door (JL)
2024 Jeep Wrangler Unlimited 4-Door (JL)
2023 Jeep Wrangler Unlimited 4-Door (JL)
2022 Jeep Wrangler Unlimited 4-Door (JL)
2021 Jeep Wrangler Unlimited 4-Door (JL)
2020 Jeep Wrangler Unlimited 4-Door (JL)
2019 Jeep Wrangler Unlimited 4-Door (JL)
2018 Jeep Wrangler Unlimited 4-Door (JL)

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Based on 7 reviews

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Flowmaster 2.5" American Thunder Axel Back System Reviews

Jesse S.

4/20/2023

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.

Richard J.

5/9/2020

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

Adam D.

10/18/2019

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.