California: Non-compliant parts may be used only on designated closed-course racing vehicles that are never registered for highway use.
Other: Please consult your local statutes and ordinances to ensure compliance with regional emissions standards.
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These BBK direct replacement 1999-04 Mustang 4.6L GT or Cobra X-pipes feature high-flow catalytic converters and BBK's unique die stamped performance Xtracter center X section to ensure maximum flow and horsepower.
OEM original O2 sensor locations and factory style die-stamped flanges ensure a perfect fit and BBK In-house dyno-testing has shown solid gains of 15-20 horsepower depending on application.
BBK full length X pipes are designed as direct bolt on to factory headers or any aftermarket shorty headers as well as, of course, BBK shorty headers.
BBK Performance X pipes have been the number one performance brand Ford Mustang enthusiasts have enjoyed for years. Each BBK X pipe offers performance, quality and value that guarantees years of top performance for your Ford Mustang.
