FlowmasterMufflers

Flowmaster's American Thunder Cat-Back System for 2009-2014 V8-powered Ford F-150's

Part #817522


2009 to 2014 Ford F-150 - Flowmaster American Thunder Series Cat-back Exhaust System 817522 - YouTube

Application:
2009 to 2014 Ford F-150 truck with a 4.6L or 5.0L or 5.4L V8 engine, fits all wheelbases.



Features:

For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. DOR/S Systems are the perfect choice, and include exit pipes for both dual out rear and dual out side configurations so that you can choose the one that fits your style. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are 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, these systems include all necessary parts and hardware for easy installation.

✓ Mandrel bent 16 gauge 409 stainless tubing
✓ Moderate exterior exhaust tone
✓ Includes hangers and hardware for easy installation
✓ Connects after factory catalytic converter
✓ Dyno tuned for maximum performance
✓ Premium Flowmaster quality

Old Smoky

So you have one for the real 6.2 V8?

FlowmasterMufflers

Yes we do. Flowmaster Part #817551 fits the 2010-2014 F-150 and SVT Raptor with a 6.2L V8 engine.

Old Smoky

single side, not a dual and only fits a 5.5' bed. no 6.5' bed

Raven2210

I have this system on my 2010 and love the sound. The only thing I don't like is when you configure the pipes straight out the back you can't get the left (driver side) pipe to hang right. No matter what I do to adjust it it hangs lower and at an angle plus it is not positioned in the same place on the bumper in relation to the other side.

eg78

I was looking at this vs the mbrp xp series, anyone have thoughts between the differences?

FlowmasterMufflers

This should not be the case. Did you loosely position the entire kit before tightening anything down?

Raven2210

Yes and I have gone back and reloosened and tried to reposition several times.

Edit: I just want to let you know that I love every thing else about this system. It puts a big smile on my face every time I start it up or hit the throttle. My wife thinks its cool that when shes out side watering her flowers she can hear me coming home from work 3 blocks away. My nieghbors probably hate it but I really don't care he he. It's just the perfectionist side of me being annoyed with that left pipe hanging odd.

FlowmasterMufflers

There is always a little bit of room for adjustment. I would try rotating the driver's side pipe after the muffler.Rotating this pipe just an 1/8" could equate to a 2" difference in tailpipe position. Your kit will line up perfectly. Just take your time and find that sweet spot.

FlowmasterMufflers

Our friends over at Stage 3 Motorsports created a great install video, as well as a "how to" change your exhaust exit style video featuring this Flowmaster kit. Thanks guys!