Buy Flowmaster 17421 Axle-back System - Single Rear Exit - American Thunder - Moderate SoundFlowmaster 17421 Axle-back System - Single Rear Exit - American Thunder - Moderate Sound Product Description:
- Mandrel bent 16 gauge aluminized tubing
- Moderate exterior exhaust tone
- Includes hangers and hardware for easy installation
- Axle-back system
- Dyno tuned for maximum performance
Product Description
This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle. With easy fit in mind, the system is mandrel bent for maximum performance and includes specially selected mufflers to support the performance image of the car. As an American Thunder system, it delivers an aggressive exterior tone with moderate interior sound level that is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, the system does require cutting of the factory system and includes all necessary parts and hardware for easy installation.
Customer Reviews
Most helpful customer reviews
1 of 1 people found the following review helpful.
Easy Install, Great Sound, Definite Performance Improvement
By David Moore
I bought this axel back system because I was never happy with the sound from my V6. I had previously tried a GT Take Off Muffler (an exhaust removed from a new GT) and while it sounded a little better than stock it was simply not good enough.I just fitted this Flowmaster in under 45 minutes and went for a 10 minute test drive. Yes it is that easy to install this on a 2007. The sound is great, much deeper than before, louder but not too obnoxious. No drone on the highway but a great sound everywhere else. I would highly recommend this exhaust. No it wont sound like a V8 but it certainly sounds more muscular as it should, and there is a definite performance improvement.Overall I am very happy with this purchase. I had considered going to true dual exhausts but in the end the cost just for an improved sound, didnt make sense.One last thing to mention, the exhaust has been on the car for a week and it sounds better than when it was first installed and there is a definite performance improvement. Flowmaster claim 10 HP and I can certainly believe that.
1 of 1 people found the following review helpful.
Great upgrade for a V6
By Wormer
I have had this installed in my 2006 V6 mustang for a few years now and have been happy with it. The installation was pretty easy (took me less than an hour). I had no experience working on cars either, so you don't need to be an expert. The sound is definitely better than stock and well worth the money in my opinion. It does 'pop' a bit when cold, but this seems to disappear after the car has been running for a few minutes.
0 of 0 people found the following review helpful.Great way to improve the performance and sound of your v6 mustang
By Brian Haddick
I replaced the stock muffler with the Flowmaster 17421 on my 2007 v6 Mustang. It was quite a noticeable improvement in performance and sound. I've also replaced the stock air intake with a K&N system.
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