Flowmaster American Thunder Single Exhaust System - 2001-04 Chevy/GMC 1500/2500 HD 6.0L/8.1L Drag Parachute Cable Clamp 12 AN Female O-Ring Inlet

12 AN Female O-Ring Inlet and Outlet

Low-profile filter design reduces the chance of damage

1964-1964 Studebaker Challenger

Small LS-Series

Flowmaster American Thunder Single Exhaust System - 2001-04 Chevy/GMC 1500/2500 HD 6.0L/8.1L Drag Parachute Cable Clamp 12 AN Female O-Ring InletFor the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat back exhaust system provides. S. O. S. (Single out side) systems are the perfect choice. 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