Flowmaster has released a new version of their popular 1987-1993 Mustang GT American Thunder System. The 409S Stainless Steel option has been added along side their already existing standard aluminized kit.
Official Release
Flowmaster American Thunder System '87-'93 Ford Mustang GT 5.0L

The 1987-93 Ford Mustang GT is a favorite of performance fans and helped make Flowmaster a household name. Now owners of these great muscle cars have the choice of standard aluminized kit construction or Flowmasters new 409S® stainless steel kit (PN817116). Both deliver that great Flowmaster signature sound, increased performance and improved throttle response.
Choice between standard aluminized kit or Flowmasters new 409S stainless steel kit
Delivers Flowmasters signature sound
Increased performance
Improved throttle response
Contact Information
Flowmaster
Web: www.flowmastermufflers.com
Phone: 1-800-544-4761
Official Release
Flowmaster American Thunder System '87-'93 Ford Mustang GT 5.0L
The 1987-93 Ford Mustang GT is a favorite of performance fans and helped make Flowmaster a household name. Now owners of these great muscle cars have the choice of standard aluminized kit construction or Flowmasters new 409S® stainless steel kit (PN817116). Both deliver that great Flowmaster signature sound, increased performance and improved throttle response.
Choice between standard aluminized kit or Flowmasters new 409S stainless steel kit
Delivers Flowmasters signature sound
Increased performance
Improved throttle response
Contact Information
Flowmaster
Web: www.flowmastermufflers.com
Phone: 1-800-544-4761
