Flowmaster FlowFX Dual Side Exit Cat-Back Exhaust Kit For 2009-2013 GM 1500 5.3L 2016-2018-2-8l-lwn-duramax 50 with flat fenders

50 with flat fenders

Proper torsion bar key unloading tool required

This tube kit works with stock or aFe's upgraded intercooler

1999-2004 GMC Yukon XL 4

Flowmaster FlowFX Dual Side Exit Cat-Back Exhaust Kit For 2009-2013 GM 1500 5.3L 2016-2018-2-8l-lwn-duramax 50 with flat fendersThe new Flowmaster FlowFX cat back exhaust system for the 2009 2013 GM Silverado Sierra 1500 trucks with the 5. 3L engine is manufactured using durable 409 stainless steel throughout and features 3. 0 inch to dual 2. 50 inch mandrel bent pipes for better exhaust gas flow, and a FlowFX "straight through" muffler for a great aggressive sound level and maximum performance. The system is finished off with dual 4. 0 inch diameter black ceramic coated 304S