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Roush R2300 675 HP Supercharger Kit - Phase 3 (11-14 GT)

Item 69135
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      Review & Installation Video

      Product Information

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


      • Phase 3 Kit - 675 HP and 585 lb-ft at the Flywheel
      • 2.3L TVS® Ford Mustang Supercharger
      • 80mm Supercharger Pulley
      • ROUSH Cold Air Intake System
      • Twin 60mm Electronic Throttle Body with Matching Throttle Body Spacer
      • Unique Fuel Rail with 47 Lb/Hr Fuel Injectors
      • 3 Year / 36,000 Mile Limited Warranty
      • Fits 2011-2014 GT Mustangs with a Manual Transmissions Only


      Unleash 255 More Horses. The stock 2011-2014 5.0L 4V Coyote Mustangs come with an awesome 420 Horsepower and 390 lb/ft of Torque from the factory, but with a Roush R2300 Phase 3 kit installed the numbers jump to an astounding 675 horsepower and 585 lb-ft of torque; that's 255 more than stock.

      Monstrous blower kit, Roush style. This complete package transforms your GT into a track-shredding beast. Kit comes complete with a 2.3L TVS® supercharger with black finish, upper and lower intake manifolds, an air-to-water intercooler, a low temp radiator, an oversized coolant degas bottle, a cold air intake system with 110mm MAF, a twin 60mm electronic throttle body with matching spacer, a 80mm supercharger pulley and a unique fuel rail with 47 lb/hr fuel injectors. Also includes a Roush Fuel Pump Voltage Regulator to moderate fuel flow and ensure a proper fuel-to-air charge ratio as well as a Plug-n-Play wiring harness where no modifications are needed to the vehicles fuel pump wiring system.

      New High-flow Technology. The ROUSH Phase 3 R2300 supercharger features Eaton's new cutting edge Twin Vortices Series technology (TVS) rotating assembly that delivers more power and better fuel economy in a smaller package for uncompromising performance. This a roots-type, positive displacement supercharger features twin four-lobe rotors that are twisted 160-degrees to greatly enhance thermal efficiency, enabling higher volume capacity, and higher operational speeds.

      Upgraded ROUSH PCM calibration. ROUSH® PCM calibration is a success of engineering that maximizes the power of the system. ROUSHcharger owners will receive a ROUSH® PCM Flash Voucher Card, which is used to obtain the specific calibration needed for your Mustang and requires ROUSH Diagnostic Tool (RDT) software and a J2534 Pass-Through device to upgrade your PCM (software and pass-through device not included). This kit also features the ROUSH® logo, showing that serious performance lies within when you raise your hood.

      Roush Performance quality - guaranteed. Roush is known for a rich tradition of excellent racing performance engineering at the highest level of OEM quality and design. This Supercharger kit features a limited 3 year / 36,000 mile warranty.

      This Roush R2300 675HP Phase 3 Supercharger Kit is specifically designed for use on the 2011 to 2014 GT Mustang equipped with the all new 5.0L 4V Coyote engine. Fits manual transmissions only. Does not fit BOSS 302 models.

      NOT approved for sale or installation in the state of California.

      Please Note. Roush Supercharger Systems are built to order for our customers and because of this, there can be a 2 to 4 week lead time on orders once your information is received.

      Fitment: 2011 2012 2013 2014 Details

      MPN# 421542

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (10)

      Write a Review

      Ratings Summary

      5 out of 5 overall rating from 10 customers

      Installation Time: Weekend

      Installation Cost: $1000+

      • September 08, 2019

        5 2014 GT - Superchargedgt Installation Time: Shop Install Installation Cost: $1000+

        Bad To The Bone

        Turned my Mustang GT into a beast. The power is awesome and very fun to drive.

        Helpful (1)
      • July 10, 2019

        5 2011 GT - GT6711

        Nice Power Increase

        Received my Roush Stage 3 kit in 3 boxes and it arrived intact. Had a local Ford dealership do the installation and was happy to find they had a Roush technician. Cost was about $1700 and I was able to retain the Roush warranty. I was pleasantly surprised when they finished it in two days. Although the Roush tune is somewhat conservative, I will likely stay with it until I beef up my internals. I love the power and torque increase and it would roast the tires right off the wheels. Looking forward to track day after I get some MT’s

        Helpful (7)
      • April 06, 2019

        5 2013 GT - Mark Installation Time: Weekend

        Roush Stage 3 TVS SUPERCHARGER

        Great kit! Easy install just follow directions closely. Huge power gains and a ton of fun! I would recommend the VMP Tripple pass dual fan heat exchanger as a add on to this kit. The Roush heat exchanger that comes with the kit does the job, but is small. After installing the Roush Stage 3 kit and the VMP tripple pass heat exchanger my car made 631 RWHP and 562 rwtq on a 100 stock motor with billet oil pump gears with the only mods being a Flowmaster outlaw cat back and other suspension mods and a custom tune from Performance Dyno. If you can swing this kit, or the VMP kit, you will have a huge smile every time your in your ride!!

        Helpful (7)
      • April 03, 2019

        5 2011 GT - JasonH Installation Time: Weekend


        Great overall product. Easy to install and overall very happy with this purchase. It will roast the tires off easy.

        Helpful (1)
      • July 23, 2018

        5 2013 GT - DarienC Installation Time: Shop Install

        Addictive power! Roush TVS for the win!

        My 2013 Roush Phase 3 TVS car is an absolute animal! I opted to go with bigger injectors (56lb GT500 injectors), colder NGK plugs, a K2 high flow air filter (from Palm Beach Dyno) and I ditched the Roush tune for a FAR superior VMP tune. The power is astonishing for a daily driven street car. Haven’t put it on the dyno yet but it’s easily 600 whp without breaking a sweat. I highly suggest going with a tuner like VMP or Lund, datalogging and dialing your car in. Driveability is spot on, and this thing rips at WOT.

        Helpful (16)
      • September 21, 2017

        5 2012 GT - STANGBOSS Installation Time: Shop Install

        Raw Power!

        I purchased this ROUSH TVS Blower and all I can say is - WOW! Mind blowing horse power with a Solid History of dependability! It looks fantastic on my motor and you will be amazed at the power gains you get from 3800RPM or higher. I'm putting down 624RWHP and 540TQ to the rear tires and I know she has more! Highly recommend this Blower!

        Helpful (18)
      • July 07, 2017

        5 2013 GT - Bigd Installation Time: Weekend

        Great power

        Very nice and easy to install !!! Very happy with it !

        Helpful (9)
      • January 30, 2017

        5 2014 GT - FredG Installation Time: Weekend

        Great Kit !

        This kit is worth the the money...Roush quality through and through...I am not a mechanic but my friend i helped do the install with is. Our only complaint is the instructions...suggest your read the entire 95 or so pages several times so you know whats coming. They don't come in order, for example you should read page 37 before doing page 34. So, READ first. Must have a good knowledge of connector pinning and re pinning. Trying to find pin number 56 amoung 70 pins on a computer connection is a bit taxing....the one connection took 3 has to be right. There is a video out there on you tube which is very helpful.The guy who did this in 10 hours must be a mechanical genius...i meant that in the nicest sort of way. Took us close to 20 hours. Take your time, do what it says.....but do your homework first. Fired up and ran perfect first time. Roush quality. Fred G.

        Helpful (20)
      • November 14, 2013

        5 2011 GT - blacksunshine Installation Time: Weekend

        Camaro Killer

        First THIS SC IS INSANE. Me and a buddy put this SC on in a weekend it wasn't bad at all just fallow the directions and that's it. After we were done I took the car to the shop and had it tuned and dyno the finished result is 610 HP at the wheels. the SC its self isn't loud you can kinda hear it up its not loud at all. if you get this SC just be carful in 4th it will spin.

        Helpful (26)
      • August 29, 2013

        5 2011 GT - POLICEMAN Installation Time: Weekend

        Excellent Kit, high quality with huge performance gains!!!!!!!

        I highly recommend getting this supercharger setup, this is an excellent kit with huge power gains. For over the past 6 months I have been doing a lot of research on what setup I wanted to go with. I finally decided on getting this kit after reading several reviews on mustang forums. Their was a lot of positive feedback on the new Roush TVS supercharger. The supercharger is such high quality that Roush offers a 3 year 36,000 mile warranty. This kit has a standard install time to be around 10 hours. It took me about 15-20 hours to complete the install as part of the instructions was unclear on some of the wiring of the kit and what bolts are to be used in the provided packages. The rest of the instructions are great. These are really the only two problems I had with the entire kit just to show the quality. There was one wiring harness that I could not figure out where to plug it into. The instructions with the kit did not show or tell where to plug it into. I contacted Roush tech support for the first time to try and figure out where the wire plugs into and they advised me their tech was busy and they would half to call me back. I waited a few days and they never called me back. So I tried calling them back and they told me the same thing, that their tech was busy. The very next day I finally talked to tech at Roush and he told me where it goes and it was so easy to find and plug into. I know Roush is really busy so that was not a big issue for waiting. It was a sensor that is hidden back behind the passenger side cylinder head. The wire I am talking about runs from the fuse box under the hood to the intercooler pump and then branches off to that sensor behind the passenger side cylinder head. Now for some of the time consuming task for me that you half to do for the install of the kit. The hardest part of the install is you half to make some grinds and cuts on the front engine cover on the block. I knew I was going to half to do this but I am not real big on doing this as their is no room for mistakes. You have to do this in order to get the provided pulley bracket on and to make clearance for the belt. I used a grinding and cutting wheel to make all this possible. I submitted a picture of the grinds and cuts I made on the studs and ribs on the front passenger side of the engine cover. There are 3 ribs that half to be removed along with 2 studs. There is another stud that half of the width needs to be cut off. You have to be really careful doing this as you can cut and shave to much off the block and cause permanent damage. I really took my time in doing this and I used a Dremel tool to smooth my work up on the block. One of the other time consuming task was de pinning some of the factory wires from the connectors. On a few of the connectors you have to de pin the wires in order to get them into the new provided connectors. So make sure you have a few wire de pinning tools for this kit. If not the local parts stores carry them. Everything in this kit that needs to be bolted on gives you the specs on how much they need to be torqued down. The Roush installation instructions use Nm, which is Newton meters. You can use a conversion calculator on the internet to convert Newton meters to foot pounds. Overall those where the only problems and the only time consuming task I had with the kit. Everything else bolted right up and the fitment of the kit is factory. The kit also comes with the Ford racing 0-degree heat range spark plugs that was not listed in the kit which is great. The Roush fuel system upgrade (boost a pump) install only took me about 20 minutes. I submitted a picture of it installed on my car. It mounts on the driver side of the trunk just behind the rear seat on the sheet metal. You will have to run one of the wiring harness from the boost a pump through the cabin floor board of the vehicle to the engine bay. This is the wire for the boost activated switch that is mounted on the supercharger. This kit also is a drop ship item meaning that American Muscle does not carry this in their warehouse, once they have received the order they will contact Roush and it will be shipped directly from them. If you have anything missing in the kit or problems you will have to contact American Muscle first. For tech support you can call Roush directly. Once I ordered the kit it took it about a week and a half to finally get to my house. Roush also provides a FedEx box for your ECM computer module which is prepaid so you can get your computer flashed at Roush. It only takes a few days to get it back. If you plan on getting a custom tune for this kit you will not need to do this step. By getting a custom tune for this kit you will void the Roush 3 year 36,000 mile warranty. I am very pleased with this product and I highly recommend it. You will be making 12 pounds of boost with this kit, and it really has some good sound features. My exhaust note has changed and it sounds a whole lot deeper and louder. The supercharger has a whine to it at wide open throttle or put into heavy strain. Its not super loud but you can still hear it. I couldn't be happier, this kit is exactly what I was expecting. Thank you American Muscle for the excellent customer service. You all set an example on how a company should treat their customers. You all have always took care of me, keep up the great work!!!!!!!!

        Helpful (63)

      Questions & Answers (28 answers)

      5 Top Rated Questions

      Upgraded internals? Would I need to upgrade any engine internals to run this kit, or can it be installed on a bone stock 11-14 gt without any problems?

      • Yes you can run this kit with stock internals. I am running this kit on my 2011 Mustang GT. I ditched the Roush tune that's provided with the kit and ordered a custom VMP tune to maximize this kit. only other mod to my car is a off road H pipe and I am pushing 14 pounds of boost with the kit. My car put down 630 HP and 552 TQ to the wheels on a Dynojet. Keep in mind the Roush tune is very conservative and restricts power so if you wanna play it safe I would stick with the Roush tune. My car has almost 40,000 miles and still have the stock clutch and everything is holding strong. I bought the kit from American Muscle and installation was great.

      Helpful (8) Show 1 more answer

      How come the Roush Stage 2 supercharger works with automatic transmission but Stage 3 does not?

      • Unfortunately, Roush Performance designed the phase 3 kit to only work with the Manual Transmissions for the Mustang and at this time they do not offer a phase 3 kit for an Automatic.

      Helpful (2)

      If i have bbk long tubes off road x pipe and boss 302 intake will this sc fit with all my aftermarket parts

      • This Roush Supercharger kit would not work with the 302 intake as it comes with its own intake setup. The long tubes will not effect your ability to use this supercharger.

      Helpful (2)

      Does the OEM strut brace need to permanently be removed to install the Roush R2300 Supercharger?

      • Yes it will have to be removed. You can always get an after market one to go in its place like like the 07-09 GT500 strut brace.

      Helpful (2) Show 2 more answers

      Is this smog legal for California

      • The Roush R2300 675HP Supercharger - Phase 3 Kit will not be Smog-legal in California no.

      Helpful (1)
      10 More Questions
      I'm thinking about getting the roush phase 3 For me to keep the 3 year 36,000 mile warranty how does that work? Can I get any shop to install it or does it have to be a Ford shop 1 answer
      Are there any smaller pulleys, you can buy for this kit? 1 answer
      I have a cobra jet throttle body could I use mines and replace the throttle body the kit comes with? 1 answer
      With the phase 3 kit fit under my stock hood? 1 answer
      Will this fit 2013 Boss 1 answer
      What vmp tune is the best for this kit and stock everything els !!! 1 answer
      Are there any required or "highly recommended" changes to suspension, drivetrain, etc. with this product? I have a 2014 GT with the track pack. 1 answer
      Since this model is not intended to be installed on a 2011 - 2014 GT AUTOMATIC, does Roush make a SC that can be used with the automatic?? I have a 2014 GT with the automatic transmission and I'm just looking at options. I like the Roush products so I thought I would ask since I saw where a couple of people have asked if it will work with the automatic, but no alternatives were provided in the answer. Thank you 1 answer
      I'm putting on a roush phase 3 supercharger my mechanic said if I drive the car hard the rods will break. Have you come across anything like this 1 answer
      I've been looking into putting a blower on my coyote equipped cobra. I'm thinking it's doable with this kit. Thought? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • TVS2300 Supercharger
      • Upper Intake Manifold
      • Lower Intake Manifold
      • Full Face Low temp radiator
      • Air-to-Water Intercooler
      • Cold air intake system with 110mm MAF
      • Twin 60mm electronic throttle body with spacer
      • Fuel rail with 47 lb/hr fuel injectors
      • Fuel Pump Voltage Regulator
      • Plug-n-Play wiring harness
      • 80mm bolt-on supercharger pulley
      • ROUSH PCM Flash Voucher Card
      • All necessary hardware
      • Installation Instructions

      Tech Specs

      Will It Fit My Mustang

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