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Flowmaster American Thunder Stainless Steel Cat-Back Exhaust - Split Side/Rear Exit (09-10 5.4L, Excluding Raptor)

Market Price $799.99 You Save 13% ($105.02)
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  • Item T527175C
  • MPN# 817522

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Features & Details

  • Aggressive Flowmaster 40-Series Delta Flow Sound
  • Durable 409 Stainless Steel Construction
  • 3" Inlet, 2.5" Outlet Mandrel-Bent Tubing
  • 3" Polished Stainless Steel Tips
  • Easy Installation; Some Trimming May Be Required
  • Choice of Rear or Side Exit
  • Fits All 2009-2010 5.4L F-150s, Excluding Raptors
The Sound of Power. Give your 5.4L F-150 a louder, more exciting tone than factory by upgrading to the Flowmaster American Thunder Stainless Steel Cat-Back Exhaust. This Cat-Back Exhaust system has been dyno-tuned to provide your V8 truck with an increase in exhaust flow that will amp up your throttle response, performance fuel economy.

Quality Construction. Proudly made in the USA, Flowmaster constructs this American Thunder Cat-Back Exhaust from durable 3 inch inlet/dual 2.5 inch outlet 16 gauge 409 stainless steel tubing for it's corrosion resistant properties. The Cat-Back System features a Super 40 Series Muffler and a pair 3 inch diameter polished stainless steel tips for great muscle car looks and sound. As an added bonus, the tips are embossed with the "Flowmaster" logo for true custom styling.

Bolt-On Installation. Flowmaster engineered this kit to be a direct upgrade replacement for your F-150 stock exhaust. All of the necessary hardware is included and installs easily with basic hand tools, with no extra modifications to your F-150. Depending on your cab and bed size, some minor trimming to the piping may be required.

Lifetime Warranty. Flowmaster is confident in the quality of their exhaust system by backing it with a Lifetime Limited Warranty. Some exclusions do apply, please see manufacturer's warranty for full details

Application. The Flowmaster American Thunder Stainless Steel Cat-Back System is designed to fit all 2009 to 2010 F-150s powered by the 5.4L engine. It is not compatible with the 5.4L SVT Raptor.

Fitment: 2009 2010 Details

What's in the Box
  • (1) Inlet Pipe
  • (1) Adapter/Extension Pipe
  • (1) Muffler
  • (1) Right Tailpipe
  • (1) Left Tailpipe - Front
  • (1) Left Tailpipe - Rear
  • (2) Side Exit Pipes
  • (2) Rear Exit Pipes
  • Hardware Kit
Installation Info
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Customer Reviews (1) Write a Review

Overall Rating 2.0

out of 5 stars

  • 2/5

    August 14, 2016

    Not Impressed

    I'm not impressed by this exhaust. First of all, it arrived with the box all torn up and the papers inside shredded. It looked like it had been opened before I received it. The exhaust did not fit together well for starters. Both the outlet pipes from the muffler did not fit into the muffler, after an hour of messing around with them I was only able to get the pipes halfway in. The exhaust clamps that came with the kit did not clamp down tight enough to hold the pipes in place, I ended up breaking two of the clamps trying to get them tight enough and ended up going to oreilly's and buying a different style clamp that worked much better. The exhaust is much louder than I was expecting and has a drone at 1500-2000 rpm, which is where the truck sits at most driving speeds. It sounds mean when you rev the engine and get down on the throttle, but at cruising speed it gets annoying pretty quickly. Overall I'm not impressed with this product, I would've expected more for $675.


    Year: 2010 Submodel: 5.4L V8 Lariat

    Helpful (0)

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