Aggressive New Exhaust Tone
If you are looking to get an aggressive growl from your 1999-2004 SVT Cobra's exhaust, this Flowmaster American Thunder catback kit is the solution. This IRS specific exhaust is wider than your factory exhaust to make more horsepower and torque from your 4.6L 4v motor. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. These kits are dyno proven for maximum performance.
High Quality Construction
This catback exhaust kit is made from 3" mandrel bent, aluminized steel to give you maximum performance for your 4.6L 4V motor. This combination allows you to get more power while having an exhaust system that will last a lifetime.
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!