Home/2011 Mustang Headers Stainless Works SP Ford Mustang GT 2011-14 Headers: 1-7/8 with Catted X-Pipe $2,197.71 Stainless Works Ford Mustang GT 2011-14 Headers: 1-7/8 with Catted X-Pipe $3,178.27 Remflex Exhaust gasket, 5.0 Coyote engines with headers $41.82 O2 Extension Harness pair 12, 2011-2014 Mustang V6, Front $41.44 O2 Extension Harness pair 24, 2011-2017 Mustang, Rear $51.80 O2 Extension Harness pair 12, 2011-2014 Mustang, Front $49.99 JBA 1 7/8" Long Tube Header, Stainless Steel, 2011-14 Mustang 5.0 $1,009.99 BBK X-pipe w/ high flow cats for long tubes, 2011-2014 Mustang GT $731.23 BBK long tube headers, ceramic, 2011-2014, 2015+ Mustang GT $878.44 BBK Long Tube headers, Titanium Ceramic, 2011-2014, 2015+ Mustang GT $1,008.17 BBK O2 Extenders, Front, Pair, 2011-14 Mustang GT $76.16 BBK O2 Extenders, Front, Pair, 2011-14 Mustang V6 $86.92 BBK O2 Extenders, Rear, Pair, 2011-14 Mustang $76.16