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BBK Catted X-Pipe (99-04 4.6L)

Market Price $475.99 You Save 12% ($56.00)
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$419.99

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  • Item 56134
  • MPN# 1670

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    Features, Video & Details

    • Improves Exhaust Flow and Sound
    • Raspy Race Car Growl
    • High Flow Catalytic Converters Included
    • 2-1/2" Mandrel-Bent Aluminized Tubing
    • Fits 1999-2004 GT, Bullitt, Mach 1, and SVT Cobra

    Review & Installation Video

    Review & Install Video

    Increases Overall Performance. Add even more horsepower and torque to the rear wheels of your 4.6L Mustang with a BBK Catted X pipe. A BBK catted X pipe will greatly improve your pony's exhaust flow to increase overall performance and sound.

    Race Car Growl. This free flowing BBK x-pipe not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

    Durable Construction. BBK's X-pipes use a free-flowing 2-1/2" diameter CNC mandrel bent aluminized tubing and a merged X crossover to improve flow. And features High flow catalytic converters to provide a significant horsepower increase over the restrictive stock cats.

    Application. Specifically designed to fit the 1999 to 2004 4.6L Mustangs, including the GT, Bullitt, Mach 1 and SVT Cobra. This Catted X-pipe is a direct fit replacement for the stock mid pipe.

    Technical Note. This BBK product is not legal for use in emission restrictive states.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    What's in the Box
    • (1) Catted X-pipe
    • (2) Down pipes
    • (4) Bolts
    • (8) Flat washers
    • (4) Washers
    • (4) Nuts
    • (2) Hose clamps
    Installation Info
    Tech Specs
    Mid Pipe Specifications
    Style Mid Pipe: Standard length "X" Type Headers Required: Shorty or Stock Manifolds
    Piping Material: Aluminized Steel Piping Size: 2.5"
    Catalytic Converter: Yes Fitment: 1999-2004 GT, Bullitt,
    Mach 1, Cobra
    Will it fit my Mustang?

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    13 Questions / 13 Answers

    Ask a Question

    Hey! As I put this X pipe on my mustang could I install some long tube headers while installed on my GT or do I have to buy the X pipe that's specifically for the long tube headers? Thanks.

    Wildcanucks33

    I currently have the off road bbk x pipe and have a check engine light on for no cats found will the carted high flow one shut it off.. I don't want to lose performance

    JamesDe

    • Yes, you will be able to add this x-pipe to your Mustangto remove the check engine light or you would be able to get a tune for the off-road x-pipe to remove the check engine light. 

      AMJalisaB

    Helpful (0)

    Since it has the high flow catalytic converters attached, will this still cause the CEL to come on when matched with BBK shorty header and SLP loudmouth exhaust?

    Aaron

    • No, this part will not cause the CEL to come on when instlaled with the BBK shorty headers and SLP exhaust.

      AMJalisaB

    Helpful (0)

    Im new to exhaust systems and i want to buy a new one what all will i need to purchase for a 2004 mustang gt with completely stock exhaust

    NicholasF

    • The BBK Catted X-Pipe will bolt up to the stock exhaust on a 2004 GT.

      AshleyK

    Helpful (0)

    Will the catts pass in CA smog testing?

    ToddF

    • The BBK Catted X-Pipe does not carry a CARB EO Number, and will be unable to pass smog testing because of this.

      Rob D

    Helpful (0)

    Will this fit a 4.6 with a Automatic Transmission? I already have the Borla cat back set up.

    Jeffrey

    • The BBK Catted X-Pipe will fit in the automatic models.

      Ricky36

    Helpful (0)

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    Customer Reviews (26) Write a Review

    Overall Rating 4.5

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4.434783 4.4
    • Exhaust Note 4.565217 4.6
    • Fit & Finish 4.565217 4.6
    • Bang For Your Buck 4.391304 4.4



    • 5/5

      Installation Time: Afternoon

      February 22, 2018

      Great

      Sounds amazing. Make sure if your car might need 02 extensions

      Adrian

      Year: 2004 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      February 17, 2018

      Bbk catted x pipe

      Perfect fit comes everything needed. Sounds great.

      WalterL

      Year: 2004 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      December 07, 2017

      CatX

      Bought complete BBK system. Great deal, great combo. Very distinct sound.

      Snakebite94

      Year: 2000 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      November 18, 2017

      Awesome

      Much improved performance. The engine breathes much better. Improved throttle response. I utilized the catted X pipe along with BBK ceramic shorty headers. The car performs much better and sounds like a beast. Can’t wait for my next Modification

      MichaelT

      Year: 2000 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      November 15, 2017

      BBK Catted X-Pipe

      fit was good. A bit loud At 2k rpm. Breathes bet and sounds great !

      MarcB

      Year: 1999 Submodel: Cobra

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      July 21, 2017

      Genesee Valley Ford is number one in my book.

      Great item. Fit and finish is excellent. I would recommend this product.

      PeteD

      Year: 2001 Submodel: Cobra

      Helpful (1)

    • 4/5

      Installation Time: Less than 1 Hour

      March 02, 2017

      BBK catted xpipe

      Love the install very easy, other than taking off the stock h pipe (that sucked) I wish it came with hangers for the original spots.

      CarlL

      Year: 2002 Submodel: GT

      Helpful (1)

    • 5/5

      July 13, 2016

      Very Happy With Noise and Fitment

      I ordered the catted X-pipe because Illinois emission laws require them and even with the cats I must say there is a definite improvement in sound quality along with a slight increase in horsepower. My car sounds much raspier and more aggressive than it used to. I ran with the stock H-pipe on my '02 GT for about a year and hated the sound of it. The only hard part you might run into is fitting the down pipes on because it is such a tight space to work in. Just be cautious about scraping (especially if your Mustang is lowered) since the X-pipe sits slightly lower than the standard H-pipe does.

      Nick

      Year: 2002 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      May 27, 2016

      for be legal in my city

      easy for install i made myself on my draway . and very fast for livraison at my house

      machz

      Year: 2003 Submodel: GT

      Helpful (3)

    • 3/5

      Installation Time: Less than 1 Hour

      April 17, 2014

      Catted X-pipe

      If you do not want your car too loud this product is good but my check engine light came on within the first 700 miles and said the catalytic threshold was too low. If I had know that my check engine light was going to come on I would not have wasted 200$ on the catted x pipe.

      JNaff03

      Year: 2003 Submodel: Mach 1 Marysville, WA, USA

      Helpful (3)

      • Response from AmericanMuscle

        There are a few things that could be causing that CEL aside from the midpipe itself. Give our customer service a call if you'd like any suggestions. If it turns out that there is something wrong with the midpipe, BBK does have a 1-year warranty on their products. We'll do whatever we can to help get this resolved.

        Lisa, Customer Care

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      April 05, 2014

      pipe

      2 reasons for the review. 1 the price compared to performance and second after reading the reviews nobody mentioned the on an 04 GT mustang I would have to but new o2 sensors because the old ones would not reach. It cost me an extra $150 bucks. It does run smoother and picks up speed a bit more not so much that roarrrrr I was looking for.

      gracedog

      Year: 2004 Submodel: GT Baton Rouge, LA, USA

      Helpful (3)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      March 27, 2014

      Great X-pipe

      After having the x-pipe installed, I had noticed the better sounding of my exhaust system. This is a great add on to my mustang including the pypes mufflers. The only thing is that the cats hang a little low and after driving at highway speeds do not park on high grass or you may notice the grass starting to smoke.

      james10

      Year: 2000 Submodel: GT Jacksonville, FL, USA

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      March 02, 2014

      Nice fitment. Nice hardware included in kit.

      I recently installed this x-pipe kit and couldn't be happier. This kit keeps me legal and also keeps my car from having the raspy sound that is notorious with 4v mod motor cars. Hardware included is very nice and installation was a breeze.

      ChrisinTN

      Year: 2003 Submodel: Mach 1 Hermitage, Nashville, TN 37076, USA

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      January 19, 2014

      2000 Mustang GT BBK catted x-pipe and borla stingers

      Always wanted the O/R X, but didn't want to deal with emissions. Got the catted X and it still sounds amazing. Kept the stock headers, and everything fits perfectly. It gave my GT the sound I've been wanting since I was 16. The throaty rumble is turning heads.

      TennesseeDavid00

      Year: 2000 Submodel: GT Franklin, TN, USA

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      September 15, 2013

      Excellent !!!

      Bought this X pipe to go along with the BBK ceramic shorty headers and Flowmaster exhaust and I couldn't ask for a better fit or sound that this set up provides. Install was easy and takes very little time for this part. I would recommend this product for any mustang owner who uses their vehicle for daily driving and still wants that agressive sound and feel.

      Cornbread68

      Year: 2002 Submodel: GT Edgewood, MD, USA

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      April 18, 2013

      Catted BBK X Pipe

      The BBK x pipe does exactly what it says it does. It didnt make my exhaust much louder, if any, but it made the exhaust note amazing with my Magnapacks! It made the exhaust note much deeper, and it isnt raspy at all. After the install, I could really hear and feel the engine breathing better. It also seemed to have made my K&N ram air intake louder. I am very pleased with my purchase.

      Ryan1212

      Year: 2002 Submodel: GT Denton

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      October 21, 2012

      BBK X-Pipe

      The X-Pipe was very easy to install. It took about three hours to install. I have loudmouth CAT-BAK and BBK cold-air intake and BBK throttle body. I also thave my Mustang on the performance setting on my BAMA Tuner. The BBK X-Pipe rally made my car rumble and sound great. I am so happy I wen twith the BBK X-pipe. I was looking at the Pypes and BBK X-pipe and there were to many reviews with problems installing the Pypes X-pipe. The BBK X-Pipe fit very well and did not have to cut or make any type of modifications. Great product

      pittsteelers1

      Year: 2004 Submodel: GT WV

      Helpful (3)

    • 4/5

      Installation Time: Afternoon

      October 15, 2012

      Good product. Better then expected

      I received the x -pipe and the box was beat up checked everything over and it seemed to be in good shape. The installation instructions were absolutely worthless. "Take off your old one install the bbk x pipe in reverse" Seriously!! Anyway after the install which is not to terrible. The pipes mounted up very nicely with no problems. The O2 holes are a little low on the front pipes and it makes it hard to attach the the O2 sensors. The sound is not noticeably louder but it does have a very tinny sound next to walls at 2k on my Mach 1. All other RPMS were fine. Fit very well lighter then stock and looks much cleaner under the car as well.

      Torino1985

      Year: 2003 Submodel: Mach 1 St Louis, MO, USA

      Helpful (4)

    • 1/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      August 01, 2012

      Cats both broke in 3-4 months

      I initially was fairly pleased with the catted X-pipes but I just had to get a second set sent out because I developed a knocking noise in the exhaust. I took the car back to the shop who informed me that both Cats were broken. I don't know if they were dropped or damaged in shipping which lead to early deterioration but AM did honor the warranty and is sending out new set ASAP. The second time aroundI considered getting off road X-pipes to avoid further cat issues but after reading reviews it sounded like off road pipes would be super loud and produced a bad smell. Therefore, I'm giving the BBK catted X-pipes a second chance thinking that they were damaged in shipping; my BBK header box had been thrown around and had a hole in it by the time that it got to me but the X-pipes box looked just fine from the exterior. My only comment on the pipes other than they sounded great along with my Flowmasters is that the shop had to modify them slightly to get them to work with BBK shorty headers. The shop welded the two together because they wanted to have a good union between the two not liking the bracket if I remember correctly.

      Boca

      Year: 1999 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Weekend

      April 27, 2012

      BBK Catted X-Pipe

      Great stock replacement, fits directly and perfectly where old on was like it said. It does hang a little lower than the stock, I have to be careful going over speed bumps and what not, but overall great x-pipe and sounds awesome with my SLOW Loudmouth II cutback exhaust and fits perfectly with that as well.

      Dylan2003

      Year: 2003 Submodel: GT Phoenix, AZ, USA

      Helpful (3)

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