2008-2017 Superduty 4.6L 6.7L DPF Back Stainless Steel 4in Dual Single Passenger Side Rear Exit (MAG17873)The MagnaFlow Pro Series Filter Back Performance Exhaust System is engineered to deliver dyno tested performance and MagnaFlows signature sound. Constructed from weight optimized, corrosion resistant stainless steel, this system enhances durability while maximizing exhaust flow. The 4in mandrel bent main piping features a muffler delete design and terminates in a dual same side behind passenger rear tire exit with 5in polished welded on single wall