2005-10 Ford Mustang Flowmaster American Thunder 3" Catback Exhaust Kit GT-GT500 - S197 by Flowmaster

Mustang Flowmaster American Thunder 3" Catback Exhaust Kit (05-10)

Details   |  Description
Mustang Flowmaster American Thunder 3" Catback Exhaust Kit (05-10)
  • Flowmaster Mustang American Thunder 3" Catback Exhaust Kit (05-10) GT-GT500 817494
  • Flowmaster Mustang American Thunder 3" Catback Exhaust Kit (05-10) GT-GT500 817494
  • Flowmaster Mustang American Thunder 3" Catback Exhaust Kit (05-10) GT-GT500 817494

Get better sound & more performance from your GT or GT500 with this 05-10 Mustang Flowmaster American Thunder 3" Cat back exhaust system!

Item #FLO-817494
MPN# 817494

Everyday Low Price: $837.97

Ships from supplier by Monday, December 12


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  • Utilizes Factory Hanger Mounts/Locations
  • Provides an Unbelievable Sound Quality Like No Other
  • Made in USA


  • 409S Stainless Steel for Maximum Durability
  • Patented Scavenger X-pipet
  • Specially Engineered 3-Chamber Mufflers
  • Lifetime Warranty

What's in the Box

  • (1) Pair of Delta Flow 60 Series Mufflers with 4" Polisted Stainless Tips
  • (1) Pair of 409S 3" Stainless Steel Tail Pipes
  • (1) Cut & Clamp 2.5" to 3" X-Pipe
  • All Needed Hardware
  • Installation Instructions

Made in the USA

Product Description

Flowmaster's new American Thunder Cat-back system for the 2005-2010 Mustang GT & GT500 takes performance to the next level. Developed and proven on the dyno, this dual 3.00" Mustang Catback Exhaust System maximizes the breathing of Ford's much-respected modular 4.6L 3V & 5.4L 4V V8 engines, delivering increased engine power, torque and throttle response.

Fully mandrel bent, it features a Scavenger Series® X-pipe assembly for mid range torque improvement and a pair of mustang-specific 60 Series™ mufflers with Delta Flow® technology. The result is an incredibly deep, powerful exterior sound with a moderate interior sound level. The X-pipe is the cut & clamp design allowing the retention of the stock catalytic converters.

Constructed from durable 409S stainless steel and finished off with 4.00" polished tips, the system is covered by Flowmaster's Lifetime warranty. The system includes everything required for easy installation including hardware and detailed instructions.

Flowmaster Exhaust Warranty - Click Here

Product Reviews

Vehicle Applications

Ford Mustang - 2005 (05) - 2006 (06) - 2007 (07) - 2008 (08) - 2009 (09) - 2010 (10)

About This Brand

Flowmaster - The Exhaust Technology Company
Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's.

Through use of these dyno's, Flowmaster's engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers "to the ground."

Flowmaster also utilizes Spectrum Analyzers to fine "tune" the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmaster's dedication to quality is what makes them the exhaust industry leader for Latemodel Mustangs and SVT Lightnings!

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