Flowmaster 717911 FlowFX Direct Fit Muffler Kit Fits Sierra 1500 Silverado 1500

Deep Performance Tone from "Straight-through" FlowFX Muffler Features Flowmasters W.A.V.E. Technology Very Aggressive Active By-Pass Sound Mandrel-bent Stainless Steel Tubing Wireless Controlled Actuator Motor Detailed Installation Instructions Direct-fit Replacement Muffler Includes a High Quality Valve Stainless Steel Construction Includes Two Key Fobs