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Pypes High Flow Catalytic Converter Kit; 2.5 Inch Inlet/Outlet; Metallic (11-14 Mustang)

Item 20135
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$342.75 (pair)

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      Video Review & Installation

      So you should be checking out Pypes cats for your '11 through '14, if you're the owner out there that might be running a little bit of forced induction, maybe a small can of nitrous, if you're looking to stay legal in terms of emissions. But if you're looking to ditch your factory-restrictive cats for something that's going to flow a little bit more nicely, give you a little bit more a bump in volume. These cats are going to give you a great balance in noise reduction, and getting rid of that gassy smell. If you are running an off-road system, you're also looking to quiet that down as well. When it comes to the installation, expect to spend a couple hours in the shop, because you are going to need to cut and get these into place. For that, you're looking at two out of three wrenches on my difficulty meter here. These cats are going to feature a three-inch inlet and outlet, and can be adaptable to most stock systems. But you're not going to have any issue getting these on with an aftermarket three-inch. These are going to be made up of a durable 409-stainless steel that's going to be polished. They will be made out of a durable, substrate metallic material. It's going to make them ideal for a forced induction application. Now, I say that because metallic materials are going to be able to accommodate higher heat exposure. Extensive heat cycles and damage will take a toll on ceramic cats, and if you [tap] them once, if they start to come apart, they will deteriorate very fast. If you're running a stock or a mild bolt-on Coyote and you're not too concerned about the build quality, SLP will have an option that will run a little bit less. That's still going to help you quiet down that off-road mid-pipe if you're looking for that.Now, in terms of the pricing, expect to be spending about $280 to $300 to get these onto your car, as well as keep you emissions-friendly. Now, compared to SLP's style, like I've just mentioned, expect to be spending around $190 to $200. But again, take into consideration, it's not going to have that tough metallic durability. Install-wise here, guys, like I said a little bit earlier, this is going to call for a two out of three-wrench job on my difficulty meter here, and about two hours' worth of labor, depending on whether or not you're going to be replacing your factory cats or adding these onto an existing off-road mid-pipe. Either way here, guys, you are going to need a jack and jack stands to get that car off the ground, a basic socket set, last, but not least here, a Sawzall, and a couple fresh blades. Now, if you are going to be installing these on an off-road mid-pipe, the locations are going to be very easy to see exactly where you're putting these in. However, if you are going to be replacing your existing cats, make sure to do a bunch of measuring just to make sure once you clamp them on or weld them in that you're good to go. That's going to wrap up my quick review of Pypes high flow metallic catalytic converters, fitting your 2011 through 2014 Mustang, which can be found right here at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Perfect for Force Inducted Mustangs
      • Rugged Construction
      • Polished 409 Stainless Steel Exterior
      • Metallic Substrate Material
      • Small Under-Carriage Footprint
      • Will Pass Most Emissions Tests
      • 2.5 Inch Inlet/Outlet Diameter
      • Fits All 2011 to 2014 Mustangs


      High Flow. Are you looking to free up your restrictive stock exhaust, but are required by law to run Catalytic Converters? Then AmericanMuscle has the answer you need in the form of Pypes High Flow Metallic Catalytic Converter Kit.

      Easy swap at the track. Every car enthusiast knows that catalytic converters suck the lifeblood - horsepower - out of your engine. If you're running a Pypes modular x-pipe style configuration for track / racing purposes, these cats give you an easy way to be street legal when you leave the track.

      Rugged construction. These Pypes Mini Catalytic Converters are build from polished 409 stainless and feature a durable Metallic substrate material making them perfect for force inducted applications. They weigh in at 2.5 lbs each and only measure 11 inches in length.

      Small Footprint. Installed, the Pypes catalytic converters have a very Small under-carriage footprint that only takes up a virtually invisible 7” in length making them perfect for custom applications.

      Will pass most emissions tests. Pypes High Flow Metallic Catalytic Converters will pass emissions testing procedures in most states. However, check your local and state ordinances for installation and usage regulations.

      Application. The Pypes High Flow Metallic Catalytic Converter Kit is specifically designed for use with power adders such as a Supercharger, Turbo-charger, or Nitrous equipped Mustang from 2011 to 2014.



      Pypes CVM11K

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Catalytic Converter

      Tech Specs

      • Universal 3" OD and ID design
      • Polished 409 stainless steel
      • Metallic substrate material
      • Includes slots and 02 bungs
      • Sold as a set of two

      Customer Reviews (206)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Boss 302 - 12, 13
        • GT - 11, 12, 13, 14
        • GT500 - 11, 12, 13, 14
        • V6 - 11, 12, 13, 14

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