Flowmaster American Thunder Dual Exhaust System - 1999-2004 Ford Mustang Cobra 4.6L DOHC Throttle Return Spring and Bracket Kit 2100 CFM on high speed

2100 CFM on high speed / 1500 CFM on low speed

Compact injectors measure 1

Aeromotive 10-micron Microglass replacement element for 12339/12341Aeromotive Inc

We have combined every possible add-on feature and incorporated them into each kit to give you long and improved performance from your Holley Carburetor

Flowmaster American Thunder Dual Exhaust System - 1999-2004 Ford Mustang Cobra 4.6L DOHC Throttle Return Spring and Bracket Kit 2100 CFM on high speedFor the person who is looking for a complete Cat back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. 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. Like all Flowmaster systems, the benefits include improved throttle response,