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  1. Cometic 07-2014 Shelby GT500 MLS Header Gaskets
    $44.87

    Cometic now offers Multi-Layered Steel header gaskets for the 2007-2013 Shelby GT500! These OEM quality gaskets provide the ultimate seal and do not require any retorquing after installation. Don't pay nearly $200 for those gaskets from Ford, get OEM quality and constructions with Cometic gaskets at a fraction of the cost from Lethal Performance. This is for a pair of gaskets to do both sides of your motor, complete set.Learn More
  2. Kooks O2 Extension Harness  1) 12" Extension Harness (6-Pin) (2011-2014 Shelby GT500) - CAS-109203
    $24.43

    Oxygen Sensor extension cable for use when you need to relocate your oxygen sensors. Kooks oxygen sensor extension cables are high quality. You will enjoy the ease of installation with these Kooks harnesses

    • 1-12 inch 02 Extension Harness
    • 2011-2014 Shelby GT500 5.4L/5.8L 4V
    • 6 pin Connector
    • Sold Individually
    Learn More
  3. Pypes O2 Extension Harness Extension Adds 16 in (2011-2014 Mustang GT / Shelby GT500)  - HVE76
    $46.75

    Pypes O2 Extension Harness Extension 11-14 Mustang Adds 16 in - HVE76

    This extension adds 16 inches to your O2 sensor cable to allow you to install an aftermarket X-pipe. Pypes Performance Exhaust systems and accessories are fabricated using stainless steel materials that will provide their owners with long term service and satisfaction and Pypes products are backed by our limited lifetime warranty!
    Features:

    • 2011-2014 Mustang O2 Sensor 16 Inch Extension Harness
    • Allows Installation Of Aftermarket X-Pipe
    • Adds 16 Inches To Your O2 Sensor Cable
    • Size: 16 Inch
    • Sold As: Each
    • Warranty: Limited Lifetime


    Lethal Performance is proud to offer the entire line of Pypes products!
    Learn More
  4. JBA O2 Extension Wire (2011-2014 Mustang GT / Shelby GT500) - 6685W
    $44.95

    JBA O2 Extension Wire - 6685W

    JBA Performance Exhaust 6686SHC 3" Stainless Steel Mid-Pipe 2011-14 Mustang 5.0 H-Pipe with Cats.





    When it comes to performance exhaust systems, most people are looking for three things: power, sound, and quality. JBA exhaust systems deliver the best of all three, giving them both great looks and performance. One of the first performance upgrades typically made to a vehicle is the addition of a performance exhaust system. While there is a high demand for performance sound, the capacity for power in the JBA exhaust systems gives JBA the extra edge. Each of these systems is tuned to provide the best possible exhaust tone without being overwhelming from within the vehicle. By replacing the restrictive factory exhaust system with free-flowing, mandrel-bent stainless tubing and quality performance mufflers, JBA has developed the power, sound, and efficiency desired in a vehicle. Each of these kits is finished with a polished, chrome plated, stainless steel tip that resists discoloring, along with high-quality hardware and thorough instructions for a simple bolt-on installation.


    Lethal Performance is proud to offer the entire line of products!
    Learn More
  5. Ford OEM 2007-2014 GT500 Exhaust Manifold Gasket Kit
    $137.36

    Ford OEM Header gasket kit for 2007-2014 Shelby GT500.

    Includes 4 pieces which is a complete kit for both driver and passenger side. Learn More

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