*All images are for illustration purpose only. Actual product may vary
 WARNING : Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Lethal Performance
SKU : LP-162904
Lethal Performance 2011-2014 Shelby GT500 T304 3" Stainless Steel Offroad H-pipe

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.

Purchasing this product requires you to sign our Vehicle Compliance Waiver HERE



Lethal Performance 2011-2014 Shelby GT500 T304 3" Stainless Steel Offroad H-pipe

NOTE: We highly recommend running this pipe with a custom tune.

Lethal Performance is proud to release our 3" T304 Stainless Steel offroad h-pipe for the 2011-2014 Shelby GT500. Just like our offroad H-pipe for the 07-10 GT500 you can expect excellent gains and a more aggressive sounding exhaust. Our offroad H-pipe is made with 3" mandrel bent T304 Stainless Steel and is a direct bolt-on requiring no cutting or welding. Installation should take you less than 1 hour using simple hand tools. Just remove the stock catted H-pipe and install our 3" offroad pipe and you can expect gains of up to 15rwhp. We tested a similar 3" offroad H-pipe on our own 2012 Boss 302 on Power By The Hours dyno and in 99deg temperature with 93 octane saw a 14rwhp increase over stock. That's on the stock tune, stock catback and stock manifolds.


3" Mandrel Bent Tubing

T304 Stainless Steel Construction

Direct Bolt-On (Requires no cutting or welding)

Increased Sound and Performance

Up to 14rwhp Gain Over the Stock Catted Mid-Pipe (Dyno Proven)

Includes All Necessary Hardware for Installation

Installs in Less than 1 Hour

**Offroad Use Only**

Vehicle Application(s)

This product fits the following models and years

SVT Shelby GT5002011 2012
SVT Shelby GT500 5.8L2013 2014

Customer Reviews 1 item(s)

Great fit, Pretty easy install
I installed this pipe on my 14 GT500.The fit is very good.When removing the stock catted pipe,the upper right side O2 sensor is really hard to get to the plug to unplug it.So don't,just break it loose and unscrew it and let the wire twist around.When reinstalling it just twist the wire so that when you screw it in it will be about right.The new pipe came in 3 pieces and that's how i put it in.I put the right side on[left nuts loose] then the left side[left nuts loose] and the center[put the clamps on the center before install].Slide the rear clamps forward to hold the pipes and then put a jack under the center to hold it up where i wanted it.Tighten the manifold nuts[15mm] evenly,look it over,then tighten it all up.Install the other 2 O2 sensors[22mm or 7/8". I decided on the H pipe because i didn't want the raspy sound of the X pipe. [To each their own].You will have to have the rear O2's turned off with a SCT or similar. A good time to also go with a throttle body,CAI, and tune from Lethal.The pricing i got from Lethal was good and like i said the fit and look is really great! Review by Motorhead / (Posted on 3/29/2014)

Write Your Own Review