Flowmaster 817942 2.5" American Thunder Axle Back System for 07-18 Jeep Wrangler JK
T-409 Stainless Steel: Built to resist high temperature corrosion this exhaust will withstand everything from rust to grime ensuring your exhaust will hold up keeping your Jeep sounding great and looking good for years to come.
Full Mandrel Bent Pipe: A process that bends without folds or creases allowing air to flow better then stock.
High Tuck: Designed for maximum clearance to prevent damage while taking on higher approach angles.
Performance & Sound: Enjoy an increase of 5 horsepower & 7lb. of torque created 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.
- Features: Moderately Aggressive Tone
- Material: T-409 Stainless Steel
- Type: High Clearance
- Shipping Weight: 6lb
- Shipping Dimensions: 29in x 11in x 6in (L x W x H)
Jeep Wrangler 2-Door (JK)
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Jeep Wrangler Unlimited 4-Door (JK)
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Flowmaster 2.5" American Thunder Axle Back System Reviews
I've lived with it for almost 6000 miles so far. The video is very accurate. Where I drive the majority is idle to 3000rpm and I'm real happy but 4000 up it is pretty loud even with the hardtop. Not been an issue yet. Fit and finish are perfect. I did this and a cold air kit and have a better throttle response and average about 1.5 mpg better for combined driving city/hwy/trail. Real happy and the price is right.
I believe this is absolutely the best bang for your buck you can get for your Jeep Wrangler. For me it went on real super easy nothing hitting and it takes away that big ugly Muffler in back.
I can also feel the power that it has,and before this axle back I was averaging maybe at the best 19 miles per gallon. Now I am averaging 21 miles per gallon and I could never hit that before.
The sound is good makes the Pentastar engine sound like it should and not too loud and no droning in back.
If I got another Jeep I would definitely buy this system again
Great