Flowmaster American Thunder Axle-Back Exhaust (05-10 GT, GT500)

Flowmaster American Thunder Axle-Back Exhaust (05-10 GT, GT500)

HEAR IT: Flowmaster American Thunder vs Stock Exhaust on an '06 Mustang GT

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 ...... READ MORE
OUR PRICE$389.99
Market Price $459.99You Save 15% ($70.00)
Item # 18403
Ships the same business day

Accessories Options

Add 2005+ Mustang 304 Stainless Steel Exhaust Hanger Kit
PRICE WITH OPTIONS $389.99

Product Features

  • Aggressive Flowmaster 60-series Delta Flow sound.
  • Polished stainless steel 4" tips.
  • Durable Aluminized Steel Construction.
  • Includes two Flowmaster mufflers
  • Fits 05-10 GT and 07-10 Shelby GT500 Mustangs.

Flowmaster Sound. The Flowmaster 60 Series Delta Flow sound from this American Thunder axle back exhaust system will improve your 2005-2010 GT or GT500 Mustangs exhaust flow for an increase in power and a throatier muscular exhaust note with their patented chambered designed mufflers.

Quality Construction. Constructed from durable 2.5" 16 gauge aluminized steel tubing for it's corrosion resistant properties the Flowmaster axle back features specialty 5" X 10" chambered 60 Series Delta Flow American Thunder mufflers with massive 4.0" diameter polished stainless steel tips for muscle car looks and sound. As an added bonus the tips are embossed with the "Flowmaster" logo for true custom styling.

Fitment. This Flowmaster American Thunder Axle-Back exhaust system is designed to fit the 2005-2010 GT and the 2007-2010 Shelby GT500 Mustangs for both great looks and great sound.

Americanmuscle recommends adding the 2005+ Mustang 304 Stainless Steel Exhaust Hanger Kit from the drop down option above, to provide more strength, stability and a cleaner installed appearance. If you have a 2007 Mustang you may need the kit for correct installation. Click here for details.

Axleback Exhaust Specifications
Piping Material: Aluminized Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 4.0"
Muffler Type: Chambered Fitment: 05-10 GT and 07-10 Shelby GT500 Mustangs

Installation Time:

1 Hour

Difficulty Level:

Advanced mechanical skills required.

What's in the box?

Hardware included:

  • (2) Two Clamps
  • (1) One Nut
  • (1) One Lock Washer

What's in the box?

Hardware included:

  • (2) Two Clamps
  • (1) One Nut
  • (1) One Lock Washer
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Fitment:
  • GT 05, 06, 07, 08, 09, 10
  • GT500 07, 08, 09, 10
  • Bullitt 08, 09

Customer Reviews

4.8100+
  • 5/5
    Good Sound
    June 18, 2010
    EC
    Very nice product, produces just enough sound to give a nice rumble and not tick off the nieghbors. Excellent fit and the large tips look great coming out the back.
    5 of 7 voted this as helpful.Yes, I recommend this product.
  • 4/5
    FLOWMASTERS
    June 30, 2009
    DREW
    its about time they carried flowmasters!!! freakin love them... a little droning in the beginning aroud 2100 grand... after they get broke in, they're AMAZING!!!
    5 of 6 voted this as helpful.Yes, I recommend this product.
  • 5/5
    RUMBLE
    November 20, 2010
    Brandon
    Daily Driver
    Love the Flowmasters. Installed myself in about 1.5 hours without a jack in my apartment garage. Hardest part was removing the stock mufflers. Great sound but initial drone made me nervous that I had made the wrong decision. After about a month the drone has gone away and the exhaust sounds more muscular. Nice and quiet when cruising down the highway, but growls when you get on the gas. Great combination for every day driving. Would recommend to everyone. This is how they should have came stock!
    1 of 1 voted this as helpful.Yes, I recommend this product.