Header-back System 409S - Dual Side Exit - American Thunder®-Moderate/AggressiveApplication SummaryFits 1975 to 1981 GM F-Body with a 4.4L, 4.9L, 5.0L, 5.7L, 6.6L, or 7.5L engine, includes Camaro and FirebirdFeaturesFor...
Header-back System 409S - Dual Side Exit - American Thunder®-Moderate/Aggressive
Application Summary
Fits 1975 to 1981 GM F-Body with a 4.4L, 4.9L, 5.0L, 5.7L, 6.6L, or 7.5L engine, includes Camaro and Firebird
Features
For the person looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, Flowmaster's American Thunder® system for GM F-Body cars include specially-selected 50 series slim-line mufflers to make your Camaro or Firebird come alive. This Header-back dual exhaust system uses 2.50 in. 409S stainless steel tubing (backed by our lifetime limited warranty!) and a durable H-pipe design that delivers improved throttle response, power and mileage. 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, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Note 1- Off Road racing use only - not legal for use on catalyst equipped vehicles. Note 2- requires double hump crosspipe. Note 3- requires fabrication and/or welding to adapt system to manifolds or headers.
