# FLM-17149 - Pontiac Firebird 1970-1974; V-8, Header-Back, All 2.50" Mandrel Bent Tubing From Trans X-Member Back, Incl. H-Pipe, Hardware, 3.00" x 10.00" 50 Series (slim) Delta Flow Mufflers, 2.5 In. T304 Brushed Stainless Steel Tips, American Thunder, DOR, 16 Gauge Aluminized Steel.
With Flowmaster Exhaust System you will optimize your vehicles exhaust system to get the best performance, blocking out the unnecessary noise at the same time. Each unit of the exhaust system is built with high-grade stainless steel to serve you a lifetime of performance. The stainless steel pipes come with lifetime warranty, while the muffler is backed up by 5-yr warranty.
Flowmaster Exhaust Systems are US-made, each unit is precisely dyno-tuned and shaped to fit selected model and production year vehicle and deliver great increase in torque and h horsepower. Even the polished muffler tip is built with premium stainless steel. Each exhaust system has an easy bolt-on installation and requires no modifications to the vehicle for the installation.
Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for the purchased product, please follow the link in the email message that you will receive after completing the purchase. You can rate appearance, ease of installation, price/value and product quality.
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"This is a great product. I didn't know it was just a rear axle back exhaust system. Regardless, great high quality product."


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"Great product and sound, really wakes the car and neighbor hood up. Has some pretty bad drone in the car at 2,000 RPM and steady at 50 MPH but for us this is not a daily driver so I love it. I've had people stopping me in parking lots to find out what kind of exhaust I had because they loved the way it sounded. If it's your daily driver, I would go for the 50 series flows instead of the 40 series but if you want to turn heads go for this kit. Also at 60-70 MPH it really quiets out so a long trip isn't a problem unless speed limit is 50 the whole way."


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"I've installed this kit by myself and it was easy. Flowmaster knows how to do it right. 2.5 hours only because I like to get it just right. The sound is just what I wanted."


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"Product arrived on time and was exactly what I wanted. Very pleased."


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"It's a great exhaust, I think now my car consumes less fuel and also it's not that loud and noisy."


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"Sounds pretty good but not quite what I had expected"


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"it took me about 3 or so hours to completely remove the factory exhaust and install this kit on my 2010 tacoma. however this was also the first exhaust anything i have ever done. the instructions were easy to follow however and explained every step in clear detail. kit sounds amazing especially when you upgrade the intake like i did. truck sounds like a Hoss now even with it being just a V6 4.0 liter engine. ;)"


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"I purchased the axle-back American thunder kit, aggressive sound level for my 2011 Camaro and I gotta tell ya this is the way to go. The sound is great and you are still able to maintain the needed back pressure. The price is GREAT and when I took them to my local exhaust guy he told me that was what he paid for them. Flowmasters are it!"


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"I purchased the American thunder exhaust kit for my 2011 Inaugural Challenger 6.4 HEMI. I took the car to local exhaust shop dropped it off at 8 am. They called me shortly saying it was done and sounded great total installation $105.00 and fit perfectly. I went to pick up car and the staff followed me out to hear it again. I used my remote start and from the first fire knew this was the sound I wanted. It has a very deep aggressive sound. Getting on it going down the road turns every head and sounds like a race car. Very happy with the exhaust! I don't really like the exhaust tips but will be painting the inside black. Just is new and can see the welds."


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"The service was great, ordering was eazy and due to christmas it took a couple of extra days, but service was good. Thanks"


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