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THE PRO SERIES MUFFLERS CONSISTENTLY DELIVERED PERFORMANCE THAT IS EQUAL TO OR SURPASSES OPEN PIPE SYSTEMS

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FLOWFX CAT-BACK EXHAUST,11-19 GM 2500HD/3500HD,6.0L,DOS 4 1/4" x 7" THE PRO SERIES MUFFLERS CONSISTENTLYBRAND NEW FLOWMASTER FLOWFX CAT BACK EXHAUST SYSTEM, 4" BLACK CERAMIC TIPS, DUAL SIDE EXIT, STAINLESS STEEL, COMPATIBLE WITH 2011 2019 GM 2500HD & 3500HD 6. 0 L THIS FLOWMASTER FLOWFX CAT BACK EXHAUST SYSTEM FOR THE 2011 2019 GM 2500HD 3500HD TRUCKS WITH THE 6. 0 LITER ENGINE IS MANUFACTURED USING DURABLE 409 STAINLESS STEEL THROUGHOUT AND FEATURES DUAL 3. 50 TO 3. 00 INCH MANDREL BENT PIPES FOR BETTER EXHAUST GAS FLOW. THIS SYSTEM EXITS WITH DUAL 4.