Flowmaster American Thunder Classic Axle-Back Exhaust (13-14 GT, GT500)

Flowmaster American Thunder Classic Axle-Back Exhaust (13-14 GT, GT500)
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Hi I’m Justin with AmericanMuscle.com, and I’m taking a closer look at the American Thunder classic axle back exhaust fitting the 2013 Mustang GT and GT500. The classic from Flowmaster gets its name from the classic 44 series that produce that iconic Flowmaster aggressive tone, but aren’t quite as radical as Flowmaster’s outlaw series. Flowmaster did choose to go full stainless with the construction of this exhaust, and the added their signature black finish to both the piping and the mufflers themselves, to further resist corrosion. Finally, everything exits out these large 4” polished tips, embossed with the classic Flowmaster logo. Since this is an axle back, the install should be a piece of cake, and take you no more than an hour using basic hand tools. Now let’s hear how the Flowmaster American Thunder classic axle back sounds compared to our factory exhaust.

About Flowmaster

Flowmaster Mustang Exhaust Kits
Flowmaster, Inc. is a specialty performance aftermarket exhaust parts manufacturer. It was founded in 1983 by Ray Flugger. Originally created to minimize California Sprint Car engine noise without sacrificing performance, Flowmaster has grown to be one of the top performance manufacturers of performance exhaust systems, mufflers, racing mufflers, stainless steel mufflers, and exhaust accessories. Designed and developed for street & strip cars, muscle cars, trucks, diesel trucks, SUV's, motorhomes, ATVs and most everyday vehicles. The company is based out of Santa Rosa, California, Sacramento, California and Hayden, Idaho. Flowmaster performance exhaust products are 100% American Made for the World of Performance.
OUR PRICE$434.99
Market Price $484.99You Save 10% ($50.00)
Item # 18443
(4.9/5)31 Reviews
Ships the same business day

Product Features

  • Aggressive Flowmaster Super 44 Series Sound
  • Polished stainless steel 4" tips
  • Durable 409 Stainless Steel Construction
  • Includes two Flowmaster mufflers
  • Fits 2013-2014 GT and Shelby GT500 Mustangs
Classic Flowmaster Sound. Give your 2013-2014 GT or GT500 that unmistakeable Flowmaster sound with a nice power boost with the American Thunder Axle-Back exhaust system. This system improves exhaust flow using Flowmaster's patented chambered muffler design for that throaty, aggressive exhaust tone your high powered Pony deserves.

Quality Construction. Constructed from durable 3" 409 stainless steel tubing for its resistance to corrosion, the Flowmaster axle back features two special 5" X 10" chambered Super 44 Series Flowmaster mufflers with 4" diameter polished stainless steel tips for muscle car looks and sound. As an added bonus the tip is embossed with the "Flowmaster" logo for true custom styling.

Application. This Flowmaster American Thunder Axle-Back exhaust system is designed to fit the 2013-2014 5.0 Mustang GT and 2013-2014 5.4L Shelby Mustang GT500 for both great looks and great sound.
Axleback Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 3" Tip Size: 4"
Muffler Type: Chambered Fitment: 2013-2014 GT & 2013-2014 GT500

Installation Time:

(approx) 1 Hour

Difficulty Level:

Simple installation for anyone.

What's in the box?

  • (2) Mufflers
  • (2) 3/8" Hanger Keepers

What's in the box?

  • (2) Mufflers
  • (2) 3/8" Hanger Keepers
  • GT 13, 14
  • GT500 13, 14
  • Boss 13

Customer Reviews