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SLP High Flow Catalytic Converter Kit (96-10 All)

Market Price $199.95 You Save 4% ($8.00)

$191.95

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  • Item 23034
  • MPN# M31040

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Features & Details

  • Improved Exhaust Flow
  • Universal 2.5" OD and ID Design
  • Stainless Steel Construction
  • Ceramic Substrate Material
  • Will Pass Most Emissions Tests
  • Durable Construction
  • Sold as a Set of Two
High Flow. Are you looking to free up your restrictive exhaust, but are required to use Catalytic Converters? AmericanMuscle has the answer in the form of SLP's High Flow Ceramic Catalytic Converter Kit.

Durable Construction. These SLP Catalytic Converters are made out of Stainless Steel and a durable Ceramic substrate material making them perfect for naturally aspirated applications.

Will pass most emission tests. SLP's High Flow Ceramic Catalytic Converters will pass most states emissions testing procedures. However, check your local and state ordinances for installation and usage regulations.

Application. This SLP High Flow Catalytic Converter Kit is designed for use with Mustangs from 1996-2010 and is sold as a set of two.

Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Details

What's in the Box
  • (2) Catalytic Converters
Installation Info
Will it fit my Mustang?
  • Bullitt - 01, 08, 09
  • Mach 1 - 03, 04
  • V6 - 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10
  • Cobra - 96, 97, 98, 99, 01, 03, 04
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10
  • GT500 - 07, 08, 09, 10

Most Helpful Reviews

5/5
SLP Cats

I have a MAC Catted H-pipe. Found out 2 weeks ago that one of my cats went bad that came with the MAC H-pipe. ordered these SLP cats to Replace the old cats and I have no complaints! (yet i Guess...lol) ...

Read More
Helpful (1)

5/5
very nice size can fit in a really tight area.

overall it has stopped the cel from flickering on and off once in awhile. legal for myu area.

Helpful (1)

Overall Rating 4.7 out of 5 stars
Read All 29 Reviews

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17 Questions / 7 Answers

Ask a Question

will these work with a Bassani o/r x-pipe?

mikep02

  • They will fit but are a little shorter then the flow tubes so you'll have to add a few inches of adapter pipe to either end.

    RANCOR

    Good Answer (1) (0)

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will these fit i want to know if they fit a 2001 v6 3.8 mustang

carlos0422

  • These will fit in fine. I believe they are the same length so you should be able to cut out the old and slip these right in. Not sure if you're aware but, your car has two resonators right off of the exhaust manifolds. These then dump into the converters and out from there. The resonators are offset a bit so these will not be a direct fit at that location.

    RANCOR

    Good Answer (2) (0)

Answer This Question I need this answered (0) (0)

Will it fit? Would my exhaust be louder? I have a 97' V6 which has a pre cat and then the cat. Is it possible If I could just take off the pre cat and replace my 2nd cat with this Slp high flow cat. And if possible then what kind of performance/ loudness gain am I looking at? (By the way, I have dual Slp Loudmouth mufflers installed)

Evans1997

  • I recommend leaving the pre-cats alone, chopping off the rear cats and straight-piping it. Have holes drilled in the pipes for the rear O2 sensors, get mil-eliminators to to attach to those, (takes care of CEL) -you will see a huge performance gain! If you still prefer your way, have the shop cut open the pre-cats and gut the ceramic mesh inside, then weld them shut again. This way you could lop off the rear cats and toss the high-flows on and it'll be quite cheaper. Yes car will be louder, but not anything that will get you pulled over. Hope this helps :)

    PsykoKlown811

    Good Answer (0) (0)

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Would these work with a BBK catted X-Pipe? I have a BBK catted X-pipe but the cats have gone bad, would these be a suitable replacement on the BBK pipe if I cut the other cats off.

Robbie2249

  • Yes, they are universal and relatively small so they should fit nicely. BTW that catted X-pipe already comes with High-flow cats.

    PsykoKlown811

    Good Answer (0) (0)

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Will this set fit onto my JBA off road pipes? And if they fit the JBA off road pipes will i still have my sound that i have or will it sound better?? thank you

Mikekaye1969

  • These will slide on to any 2.5" pipe between the header/manifold down pipes and the mid-pipe, and clamp or weld in. Catalytic converters have little effect on the exhaust note. Overall, your sound will not be affected.

    BDale

    Good Answer (0) (0)

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Can these fit with off road x pipes?

Gnate

  • The SLP High Flow Catalytic Converter Kit is a universal kit designed to work with all 1996 to 2010 Ford Mustangs with some modification. This kit should work fine with your off road x pipe but you will have to modify the X pipe and your exhaust to weld or clamp these Catalytic converters in.

    SalC7

    Good Answer (0) (0)

Question Resolved

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Customer Reviews (29) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Performance Gain 4.133333 4.1
  • Fit 4.2 4.2



  • 4/5

    Installation Time: Afternoon

    October 18, 2016

    works great relatively east to install.

    Recommend welding them in. The C clamps that come with the cats are barley Aquitaine .

    Mike

    Year: 2002 Submodel: GT

    Helpful (1) (0)

  • 4/5

    July 31, 2016

    Great purchase, be cautious!!

    Let me start by saying these things sound great! Definetly added a little roar to my 3.8. Not to mention, a little power boost is noticed. On the other hand, my engine light popped on and I definetly noticed a reduction in gas mileage. Be Cautious!

    02Stang

    Year: 2002 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    March 04, 2016

    Slolz high flow

    Delivered on time and neatly packaged... I was looking for something that wouldn't make my car sound so low and these definitely did the job.. if anything they make my car sound so much better.. definitely recommend if you're looking to keep your car sounding loud..

    Ally

    Year: 2003 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 15, 2015

    Kenny

    Great sound, and easy to install with no Eng. Light

    kennyg

    Year: 2008 Submodel: GT Pueblo CO

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    June 26, 2014

    I have low end torque again!

    Bought these to accompany the gutted primaries on my '02 P71, eliminated overly loud exhaust and gave me my low end torque back. Roasted the tires for 5 seconds before the car even came off the line! I plan on throwing an X pipe and a pair of Pypes M80s mufflers on in a couple weeks. Thanks American Muscle!

    PsykoKlown811

    Year: 2002 Submodel: Other California, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 27, 2013

    The Sound... THE SOUND

    This is a great product, no only will help you to get a little more HP, but it will as well help you with the sound. I already have SLP LM1 and they sound great with the stock CATs, But still not that off-road sound that I wanted. I bought this specially because of the SLP brand and the reviews. I cannot be more happy with them. The sound is the nearest you can get to an off-road sound (with the SLP LM1 combo) I will upload a Video latter so you can judge for yourself s. The installation requires a 5 inch pipe so it can fit your stock mufflers if you are removing your stock cats. Other than that it took my welder about 20 minutes to have both cats welded.

    Demontem

    Year: 2004 Submodel: GT Las Cruces, NM

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    August 18, 2013

    Fixed my bbk o/r x pipe

    I got these to make my exhaust smell and sound better and to be legal. The bbk o/r x pipe sounded terrible with stock mufflers and smelled worse. It was an easy install with a saws all and clamps with good fitment. It toned down the rasp but is still louder and smells almost stock. I feel a little more power compared to stock exhaust. Recommended!

    Chasing300

    Year: 2001 Submodel: GT Carlton, MN, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 22, 2013

    very nice size can fit in a really tight area.

    overall it has stopped the cel from flickering on and off once in awhile. legal for myu area.

    99snake

    Year: 1999 Submodel: Cobra

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    March 13, 2012

    SLP Cats

    I have a MAC Catted H-pipe. Found out 2 weeks ago that one of my cats went bad that came with the MAC H-pipe. ordered these SLP cats to Replace the old cats and I have no complaints! (yet i Guess...lol) I had the old cats cut out and the new SLP Hi-Flow cats welded in. The sound is still agrressive and Im sure they perform just as well..if not better.. NOTE: SLP says that these cats are made ONLY for fitment with SLP X-pipes. This is not the case..you can pretty much have them welded in in any set up...

    SyNdicateZ

    Year: 2002 Submodel: GT Mass

    Helpful (1) (0)

  • 4/5

    January 11, 2010

    SLP high flows

    Overall great product with great customer support. AM price matched it for me and everything. I ended up writing an install guide for the cats in hopes to make the installation for others a bit easier. Only reason why I gave it 4 stars is because no installation hardware came with the kit. You either need to have them welded in or you need to purchase 4 exhaust clamps. (I bought 4 for $8)

    Andy M.

    Helpful (27) (1)

  • 5/5

    March 31, 2011

    SLP High Flow Cats

    I had these cats welded on to my bbk o/r x pipe and no complaints at all. Top notch SLP quality, makes a non-catted x pipe sound so much better throughout the rpm band, no more rasp with my exhaust and sounds much cleaner

    Mark

    Year: 2002 Submodel: GT

    Helpful (9) (1)

  • 5/5

    March 31, 2011

    dam good

    this product kills the competition. sounds insane while giving the power of straight pipes

    cody

    Year: 2000 Submodel: GT

    Helpful (6) (1)

  • 5/5

    December 29, 2010

    great cats

    I am extremely happy with these high flow cats. I was concerned will losing clearance under my 2008 Mustang, but the size of these cats matched the stock cats. This allowed them to be installed right where they are from the factory. Even though they are not large enough to place the O2 sensors, they can still be mounted just behind them on the pipe. Now I have that high performance, that great sound, and maintain my states requirements, exactly what I was looking for.

    Garry Tossing

    Year: 2008

    Helpful (8) (3)

  • 5/5

    July 28, 2011

    SLP cats

    This things are everything you would expect from SLP. I have them custom welded into a bbk x-pipe with loudmouths and I couldnt be happier with it. they give me the sound and the quality i was looking for

    Dalton

    Year: 2001 Submodel: GT

    Helpful (4) (1)

  • 5/5

    April 06, 2011

    SLP Cats

    I added them into my bbk o/r x pipe (long tube headers, Flowmaster 40s) They sound great. Here is the problem My stang has the lowering springs. The drivers side cat has to sit about a inch and a half lower for the tranny linkage than the passenger side This puts them less than 1 1/2 inches off the road. and have scraped them on the road a couple times now. I don't even dare go over a speed bump. I really wish i could keep them they do sound great and I'm not setting off car alarms in the parking lots anymore I am going with the MagnaFlow HiFlow Cats they are a lot smaller in diameter

    Sean

    Year: 1999 Submodel: GT

    Helpful (2) (0)

  • 5/5

    June 30, 2011

    SLP High flow Cats

    I love these cats, they go great with my slp lm1 setup, my exhaust is still as loud as I want, and they fit great too. Would recommend these to anyone who needs Catalytic converters.

    Brandon

    Year: 2003 Submodel: GT

    Helpful (3) (1)

  • 5/5

    June 03, 2011

    SLP highflow cats

    great sound and i no longer have SIX cats robbing my horse power

    Bert

    Year: 1996 Submodel: GT

    Helpful (1) (0)

  • 5/5

    March 31, 2011

    Great Product

    Easy to install. I had the X-pipe off the car, but then completed the install laying on the ground with the car on jack stands. Still pretty easy considering. Came with detailed instructions. About a 1/2" better clearance than the ones I had on previously (don't know the manufacturer) because these have a flat spot on the bottom. I still took a hit on a speed bump causing a dent, and it held up. No funny sounds indicating it cracked inside. My old one cracked and sounded horrible.

    Danny

    Year: 1998 Submodel: Cobra

    Helpful (1) (1)

  • 5/5

    March 31, 2011

    04 mustang gt

    I installed these SLP high flows cats on my mustang gt and they work really great. Really good flow and loss of horsepower. Thanks again AM.

    Brian

    Year: 2004 Submodel: GT

    Helpful (0) (8)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    November 03, 2016

    My Cobra

    These converters fit perfectly right out of the box and improved the performance. I had the exhaust system completely realigned while I was having the converters installed. Sounds unbelievable and my performance it off the charts. This was a 5 Star purchase. Love them.

    MY98CBRA

    Year: 1998 Submodel: Cobra

    Helpful (0) (0)

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