American Racing Longtube Header Kit
Increase horsepower and torque in your 2011-2014 Mustang 5.0 with a high quality set of longtubes from American Racing Headers! ARH set the standard for quality in the exhaust world with their top notch products. This longtube header kit features 1 3/4" primaries to provide maximum flow over the factory manifolds. The headers flow into an off road x-pipe to replace the restrictive catalytic converters and provide an intimidating sound. The fit and finish of these American Racing Headers is second to none!
American Racing Headers proudly makes all of their products in the USA. This 2011-2014 Mustang 5.0 header and mid-pipe kit is constructed entirely with U.S. made 304 stainless steel tubing. These headers start off with 3/8" thick flanges with tig-welded and hand ported inlets. The 1 3/4" primary tubes are all one piece design for 100% leak-free performance. These primary tubes flow into the included 3" off-road X-pipe. This combination will maximize flow, horsepower, and torque!
This longtube header and x-pipe kit includes an off-road x-pipe. This x-pipe is intended for off-road use only and is not street legal.
-ARH recommends reusing factory gaskets or replacing with Ford OEM set.
-Installation of long tube headers will require custom tune to prevent damage to your vehicle. If you already have a custom tune on your Mustang, please consult with your tuner prior to installation and operating your Mustang.
Added these to my 2014 GT w/ track pack this past weekend. Plan on 16+ hours unless you do this for a living. Worth every penny and minute of the install. Previously Dyno'd 381HP/375TQ with Flowmaster axle-backs and a Ford Racing Tune. I had these ARH headers and OR x-pipe ceramic coated and they went from beautiful to super model status. Installed along with a Steeda CAI (stock throttle body and intake manifold). On the same dyno i was able to now put down 416HP/395TQ (+35HP and +20TQ). With all that good news, the sound is still the best part! ARH + Steeda + LMR = Awesome!