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BBK Off-Road X-Pipe (99-04 4.6L)

100+ Reviews
Our Price

$219.99

  • Item #56130
  • MPN# 1669

  • Market Price $252.99
  • You Save 13% ($33.00)
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Customer Photos
Features
  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • 2-1/2" Mandrel-Bent Aluminized Tubing
  • For Off-Road, Track Use
  • Fits 1999-2004 GT, Bullitt, Mach 1, and SVT Cobra
Description
Increases Overall Performance. Add even more horsepower and torque to the rear wheels by eliminating those power robbing catalytic converters with a BBK Off-road X pipe. A BBK X pipe will greatly improve your pony's exhaust flow to increase overall performance and sound.

Race Car Growl. A 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 BBK Construction. This BBK direct replacement X-pipe features 2.5” diameter CNC mandrel bent aluminized tubing and a merged X crossover to improve exhaust flow. Additional features include factory O2 sensor locations, and OEM style die-stamped flanges all to ensure a perfect fit.

Application. Specifically designed to fit the 1999 to 2004 4.6L Mustangs, including the GT, Bullitt, Mach 1 and SVT Cobra. This Off-Road 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) Off-road X-pipe
  • (2) Down Pipes
  • (4) Bolts
  • (8) Flat washers
  • (4) Lock washers
  • (4) Nuts
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: No - Off-Road Use Only Fitment: 1999-2004 GT, Bullitt,
Mach 1, Cobra
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 99, 01, 03, 04
  • GT - 99, 00, 01, 02, 03, 04

2000 GT Mustangs may require modification to stock manifold studs for proper fitment

Most Helpful Reviews

5/5

3-piece design

Easy to install with the 3-piece design. Sound is great combined with the Borla Stinger S-type exhaust!

Helpful (1)

5/5
"Bad to the Bone"

Great sound. Went around the block on Easter Sunday and it snapped some necks. If you have a 5-speed BBK is the way to go. Texas Motor Speedway here I come.

Helpful (2)

Overall Rating 4.5 out of 5 stars
Read All 100+ Reviews

Customer Photos (12) Submit Your Photo

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25 Questions / 10 Answers

Ask a Question

will this fit with bbk shorties? I have an 01 GT & I don't know if this will fit with my bbk shorty headers

Nava

  • This off-road x-pipe would be a great complement to the BBK Shorty Headers! This mid-pipe will bolt up with no issues!

    LisaS

    Good Answer (2) (1)

Show 3 more answers Question Resolved

Will this fit slp long tube headers if i got a automatic transmission?

StangWang78

  • This x-pipe will only bolt up to stock manifolds or shorty headers. To install Long Tube headers, they would require the use of a shorty style mid-pipe to compensate for the longer length of the headers.

    LisaS

    Good Answer (1) (1)

Show 2 more answers Question Resolved

will this work with stock headers?

Garret

  • Absolutely! This x-pipe can bolt up to your stock manifolds with no problems!

    LisaS

    Good Answer (0) (0)

Show 2 more answers Question Resolved

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Customer Reviews (100+) Write a Review

Overall Rating 4.5

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.603961 4.6
  • Exhaust Note 4.326733 4.3
  • Fit & Finish 4.128713 4.1
  • Bang For Your Buck 4.534654 4.5



  • 5/5

    July 05, 2016

    Bbk x-pipe

    Great quality and lots of adjustment to fit your needs! Sounds great with an awesome decel rumble/growl

    Last2laugh

    Year: 2000 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3

    Helpful (1) (0)

  • 1/5

    Installation Time: Weekend

    December 19, 2012

    Disaster

    Absolutely terrible. Do not buy this product unless you are looking for a big headache. I thought this would be a one day job because the description says it will bolt right up to the stock manifold, wrong. This project has turned into a 3 week process as I can only work on it on weekends. Reason why you shouldn’t buy this number 1, the driver side flange that comes on this BBK x pipe does NOT seal. Poor design is the problem here, the flange literally tightens down before the pipe does, which leaves the pipe not sealed and loose. To fix this problem I had to buy a separate flange that lined up with the manifold studs. Then cut it and weld it around the BBK x pipe so that it would do what a flange is supposed to do, seal the pipe. My next problem was with the connection between the x pipe and the mufflers. The ends of the x pipe were almost exactly the same as my mufflers. To get them to seal properly I had to angle the pipe upwards which didn’t allow me to tighten down the manifold ends correctly. This created a mismatch between the manifold portion and the muffler portion of the x pipe and put a ton of stress on the clamp that BBK provides. I didn’t feel comfortable leaving the pipe the way it was because I just couldn’t get enough meat on both ends of the clamp to tighten it down completely and seal up the huge leak it was causing. So I went to a muffler shop and had them weld the clamp to both ends of the x pipe. Finally once I got the pipe on and I started it up ready to hear that awesome sound all x pipes should make, let’s just say it was very disappointing. Yes, it was louder and the tone it make in idle is ok. However, after taking out for a spin I quickly changed my mind. The x pipe makes a very awful sound when shifting. Basically, when decelerating from 3 or higher rpms it sounds bad. Poor design, poor sound, and way too much time involved is why I gave this x pipe the review I did. Do Not Buy.

    Bhale

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 St Louis, MO, USA

    Helpful (2) (0)

    • Response from AmericanMuscle

      Lisa , Customer Care

  • 4/5

    Installation Time: Afternoon

    August 13, 2012

    Like it but...

    Pretty straightforward installation however the driver side did not line up and it took some rigging but I got it. Sounds great and man at the top end my car really pulls! One complaint, it hangs to low for my taste... I scrape everywhere on my SR Springs. Anyone know how to fix this?

    Andy93

    Year: 2001 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Austin, TX, USA

    Helpful (1) (0)

  • 4/5

    Installation Time: Less than 1 Hour

    July 20, 2012

    X-Pipe freed up some ponies.

    Great addition to increase flow in the exhaust system. I have it hooked to a Flow Master exhaust and together with the BBK Throttle Body and CAI / Bama Tuner it was a good bang for my buck purchase.

    soleglow

    Year: 1999 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1

    Helpful (1) (0)

  • 1/5

    Installation Time: Afternoon

    June 28, 2012

    should have got a diffrent brand

    my car sounds like an old beat up truck now due to a exhaust leak pipes really dont line up that well....should have gone with the magnaflow one piece design

    chris82

    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Seattle, WA, USA

    Helpful (1) (0)

    • Response from AmericanMuscle

      Lisa , Customer Care

  • 5/5

    Installation Time: Afternoon

    April 07, 2012

    "Bad to the Bone"

    Great sound. Went around the block on Easter Sunday and it snapped some necks. If you have a 5-speed BBK is the way to go. Texas Motor Speedway here I come.

    BlueThunder88

    Year: 2004 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Haughton La.

    Helpful (2) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 21, 2012

    opens her up thats for sure!!!!!!!!!!!

    well made piece added it to my slp loud mouth exhaust and now my pony is loud and i mean LOUD... with in the first hour on the street an old man asked what was under the hood. great product easy to install great fit.

    LIV2DIE

    Year: 2001 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Great Falls MT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    September 02, 2011

    3-piece design

    Easy to install with the 3-piece design. Sound is great combined with the Borla Stinger S-type exhaust!

    AlexAM

    Year: 2003 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Aston, PA

    Helpful (1) (0)

  • 5/5

    May 07, 2011

    Fantastic, but..

    The sound, fantastic, Power Gain, very noticable. It's music to my ears. But, it clearly says FACTORY O2 SENSOR PLACEMENT, on the description. And it's not, at least not for my 04 GT, the 2 plugs on the downpipes fit fine, but i'm missing 1 foot of wire on the passenger side, and 2 1/2-3 on the drivers side. If you're planning on buying this, then buy some o2 extensions too. I'm going to sauder some copper wire on and make it work. Overall, worth it, really really really worth it.

    Walt

    Year: 2004 Model: GT Driving Style: Daily Driver

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    October 05, 2011

    mean sounding

    really easy to install, perfect fit and sounds GREAT i have this and flowmasters right now and it will wake up the neabors love it i will probably be changeing the flowmasters to eather pypes vilators or borila stingers tho

    Rusty

    Year: 2002 Model: GT Driving Style: Daily Driver Delaware

    Helpful (4) (1)

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