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JBA 2.5 Inch Power Pack Off-Road Full Exhaust System; Natural (99-04 GT)Find parts that fit my vehicle

Item 23144
AmericanMuscle no longer carries the JBA 2.5 Inch Power Pack Off-Road Full Exhaust System; Natural (99-04 GT). Please check out 1979-1993 Fox Body Mustang Exhaust for an updated selection.
JBA 2.5 Inch Power Pack Off-Road Full Exhaust System; Natural (99-04 GT)
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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation


    • Increases Horsepower and Torque
    • Free Flowing Mandrel-Bent 2.5" Tubing
    • Stainless Steel Construction
    • Natural Finish on Long Tube Headers
    • 3.5" Chromed Tips
    • Classic Muscle Car Rumble
    • Includes Long Tube Headers, Off-Road H-Pipe and Matching Cat-Back
    • For Off-Road, Track Use Only
    • Fits 1999-2004 GT Mustangs


    More Power. Now you can increase the horsepower and torque of your 4.6L powered Mustang with JBA's 2.5" Power Pack Off-Road Full Exhaust System for power you can feel throughout the entire RPM band. This JBA Power Pack Kit will greatly improve your Mustangs exhaust flow to increase your Pony's horsepower and torque.

    Full Exhaust Kit. The JBA Power Pack Full Exhaust Kit is a complete exhaust system that includes a pair of natural finish Long Tube Headers, a matching 2.5" Off-Road Shorty H-Pipe, and 2.5" Cat-Back exhaust.

    Natural Finish. The included JBA Headers feature a natural stainless steel finish, which provides an aggressive appearance to your engine bay. This is not a heat-resistant coating, AmericanMuscle recommends the use of Exhaust Heat Wrap for high performance applications.

    Recommended Upgrade. To realize the full power potential that this JBA Power Pack Full Off-Road Exhaust has to offer, AmericanMuscle recommends a Bama custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. The JBA Power Pack Off-Road Full Exhaust System is specifically designed to bolt-up in stock location on any 1999 to 2004 GT Mustang equipped with the 16 valve SOHC modular 4.6L V8 engine.

    Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

    CA Residents: WARNING: Cancer and Reproductive Harm -

    Installation & What's in the Box

    Installation Info

    What's in the Box

    • (1) Driver Side Header
    • (1) Passenger Side Header
    • (1) H-pipe
    • (1) Right muffler assembly
    • (1) Left muffler assembly
    • (1) Right tailpipe assembly
    • (1) Left tailpipe assembly

    Tech Specs

    Header Specifications
    Header Type:Long Tube Finish :Natural 409 Stainless steel
    Type Mid Pipe Required:JBA Shorty Mid PipeFitment:1999-2004 GT

    Mid Pipe Specifications
    Style Mid Pipe: Shorty "H"Type Headers Required:JBA Long Tube
    Piping Material:Stainless SteelPiping Size:2.5"
    Catalytic Converter:"No" - Off road use onlyFitment:1999-2004 GT Mustangs

    Cat-Back Exhaust Specifications
    Piping Material:Natural Stainless Steel Tip Material :Chromed Stainless Steel
    Piping Size:2.5"Tip Size:3.5"
    Muffler Type:Chambered Fitment:1999-2004 GT Mustangs

    Customer Reviews (1)

      Brand Image

      Reviews of JBA Exhaust products have an average rating of 5.0 out of 5

        Questions & Answers

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