BBK · New
BBK 05-09 Mustang 4.0 V6 True Dual Cat Back Exhaust Conversion Kit With X pipe
MPN 4011 · Store SKU bbk4011
Supplier stock checked 11/7/2026, 5:17:39 AM UTC. Adding a part does not reserve it.
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Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Convert the single exhaust on your 2005-2009 Mustang V6 into a true dual set up with this BBK dual exhaust conversion kit. Combining a GT axle back and the included BBK Performance off road x-pipe will dramatically increase the sound of your Mustang to a roar that will be sure to turn heads. This conversion kit designed to be used with factory or aftermarket shorty style headers and requires the use of an axle back exhaust for Mustang GT and both driver side exhaust hanger brackets (not included). The rear bumper cover will need to be modified to clear the driver's side exhaust tip, or you can use a GT bumper cover. BBK V6 Mustang dual exhaust conversion kits include a full 2.5" mandrel bent stainless steel X pipe with high flow catalytic converters along with the added drivers side tail pipe. Convert the single exhaust on your 2005-2009 Mustang V6 into a true dual set up with this BBK dual exhaust conversion kit. Combining a GT axle back and the included BBK Performance off road x-pipe will dramatically increase the sound of your Mustang to a roar that will be sure to turn heads. This conversion kit designed to be used with factory or aftermarket shorty style headers and requires the use of an axle back exhaust for Mustang GT and both driver side exhaust hanger brackets (not included). The rear bumper cover will need to be modified to clear the driver's side exhaust tip, or you can use a GT bumper cover. BBK V6 Mustang dual exhaust conversion kits include a full 2.5 in. mandrel bent aluminized steel X pipe and a drivers side tail pipe. 2005-2010 MUSTANG V6 DUAL EXHAUST CONVERSION X PIPE KIT WITH CATALYTIC CONVERTERS High Flow True Dual V6 Mustang Exhaust Conversion; 2.5 in.; X-Pipes w/Converters; 2005-2010 MUSTANG V6 DUAL EXHAUST CONVERSION X PIPE KIT WITH CATS High Flow True Dual V6 Mustang Exhaust Conversion
Manufacturer fitment & guides
Check 4011 against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
