Sale Quick view MBRP 3" Dual Muffler Axle Back, Split Rear, 409 2011-2014 V6 3.7L Mustang SKU: S7227409 Compare $660.87 $534.99 INSTALL INSTRUCTIONS MBRP S7227409 Instructions 3" Dual Muffler Axle-Back, Split Rear Deep, Mellow Exhaust Note High Flow Mufflers Bolt-On Installation 3" 409 Stainless Steel Tubing 4" O.D stainless steel, dual walled angled exhaust tips included! Fits... Choose Options Choose Options Add to Wish List Add to My Wish List Create New Wish List