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Roush R2300 625 HP Supercharger Kit; Phase 2 (11-14 GT)

Item 69141
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      Review & Installation Video

      Product Information

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


      • Phase 2 Kit - 625 HP and 525 lb-ft at the Flywheel
      • ROUSH Phase 2 R2300 Supercharger
      • 85mm 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's with a Manual or Automatic Transmissions


      Unleash 205 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 2 kit installed the numbers jump to an astounding 625 horsepower and 525 lb-ft of torque; that's 205 more than stock.

      Monstrous blower kit, Roush style. This complete package transforms your GT into a track-shredding beast. Kit comes complete with a R23300 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 85mm supercharger pulley and a unique fuel rail with 47 lb/hr fuel injectors.

      New High-flow Technology. The ROUSH Phase 2 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).

      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 625HP Phase 2 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 both automatic and manual transmissions. 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# 421390

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (22)

      Write a Review

      Ratings Summary

      5.0 out of 5 overall rating from 22 customers

      Installation Time: Weekend

      Installation Cost: $1000+

      • March 08, 2020

        5 2012 GT - Levy Installation Time: Weekend


        Threw on a vmp 79 mm pulley and she screams. Highly recommend.

        Helpful (0)
      • January 17, 2019

        5 2012 GT - catfish Installation Time: Weekend

        Performance upgrade

        I found this kit very complete. Fits manual or auto. trans. Parts for both in this kit. Does take special tools a normal person won't have, elect. Connector tool, cutoff tool, and auto. trans.cooler line quick discount tool. After many years turning wrenches had to find a Snap on tool truck for discount tool. All in all, was very complete kit.

        Helpful (4)
      • January 11, 2019

        4 2014 GT - AnthonyZ Installation Time: Weekend

        Worth every penny butttt

        They don’t tell you that you can’t upload the roush tune with a handheld tuner.. you do in fact need that special device listed in the product details.. I feel like that part should have been bolder or underlined or made more clear.. as for the fit, you do have to do some cutting which makes it not a perfect bolt on.. also the instructions are a pain and the pictures can be a little more clear.. but the power is unbelievable.. couldn’t be happier

        Helpful (2)
      • December 30, 2018

        5 2012 GT - AaronA Installation Time: Shop Install Installation Cost: $1000+

        Whole different world

        i was immediately satisfied with the power gains. Went from 390 to 500 hp to the wheel. My only complaint is that it I don't hear a whine very much. i would look no further if you want to go force induction.

        Helpful (4)
      • October 14, 2018

        5 2011 GT - KoreyS Installation Time: Full Day

        This kit is insane

        This kit plus a VMP boost a pump, longtubes and a full exhaust made 612whp on my 2011. It's incredible.

        Helpful (9)
      • September 07, 2018

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


        Way better then the other brands.driving dont even know you have it on there.highly impressive.just leave the traction control on and hang the whine when you kick it.mine is auto and just keeps pulling hard.easy to control I still have my warantee.can't beat that

        Helpful (5)
      • June 10, 2018

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

        Another Level of Performance!

        With my long tube headers and custom tune, this car is just an animal. 1st and 2nd gear is worthless unless you've got some good meat out back but 3rd and on is just a blast.

        Helpful (13)
      • April 24, 2018

        5 2014 GT - JohnM

        Smiles by the mile!

        Extremely happy with this Supercharger and choosing Roush over xyz brand.. Did the install myself, took my time and finished in two weekends. All of the parts, connectors etc. are factory correct so everything looks clean and original. Power gain is incredible. I’m glad I waited to make this my first modification, now I can focus on stance and appearance. Thank you Roush and American Muscle!

        Helpful (11)
      • April 11, 2018

        5 2013 GT - JoseH Installation Time: Weekend

        Phase 2 kit

        Great kit easy install...................................................

        Helpful (8)
      • April 01, 2018

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

        Roush ( A dream come true)

        Wow! Bought the Phase 2 kit ofr my 14 Coyote and had my local speed shop install. A few days later 523.7 h.p. to the wheels and 650 h.p. to the crank. The smile on my face is so big it won't fit om this screen!

        Helpful (18)

      Questions & Answers (29 answers)

      5 Top Rated Questions

      Installation Do you need to have the phase 1 kit install first before you install the phase 2 or can you just go straight to phase 2 on a stock 5.0 gt

      • This kit is all you need.

      Helpful (13) Show 1 more answer

      Does the Phase 2 kit fit the 2014 GT with track pack option? The track pack includes the Boss radiator, which is larger than the standard GT radiator. Thanks.

      • The Roush R2300 625HP Supercharger will fit Mustangs equipped with the Track Pack.

      Helpful (2)

      Does the blower fit under a 2012 hood?

      • The Roush R2300 625HP Supercharger will fit under the stock hood of a 2012.

      Helpful (2)

      Is there other parts need to get along with this kit with a stock 14 GT?

      • Additional supporting mods are recommended. As they can vary wildly based on your exact setup, we recommend speaking directly with your tuner/installer for their recommendation.

      Helpful (1)

      Hey I got a 2012 mustang gt but I changed my shock intake for a 302 boss intake. So can I still use this phase 2 kit. And is it a complete kit. Plus can I skip the phase 1 kit a get the phase 2 kit.

      • You will need to remove the Boss manifold to install this supercharger as it is a roots style supercharger. This phase two kit will also be everything you need to bolt on to your car.

      Helpful (1)
      10 More Questions
      With this kit, is there a shock tower brace that will clear the blower assembly ? 1 answer
      I would like to add the Roush stage two kit. I have a 2014 GT. Will the stock clutch handle the torque increase ? 1 answer
      Will this supercharger work with factory spark plugs or do I need to replace the factory spark plugs with a different version plug? 1 answer
      I read that this kit does work with the SCT Tuner. Is this correct? If i install this, is my car derivable to the tuning shop? 1 answer
      Supercharger kit I want to buy the roush sc kit stage 2 for my gt 2013. I already bought the sct ifx tuner and free tunes. Can I tune my mustang after installing the sc with the cst tuner and bamma tunes or watha do I need to do to reprogram my car 2 answers
      Does this require a custom tune? Because I have a dyno tune, would I need to buy a handheld tune or do y’all send one ? 1 answer
      Do I need to send the computer out to Roush like the 4.6? Or can a tune be downloaded? Also what all comes in the kit is there everything to Install it? 1 answer
      I have a 2013 mustang gt with roush axle back exhaust system, cold air intake with a BAMA Tune. Will I need to upgrade my stock manifolds? Will I be able to put the Roush Tune even if it has the BAMA Tune? What other upgrades will I need to do? 1 answer
      If this kit works with a auto trans would I need a shift kit for my trans ? 1 answer
      Why won’t this fit a boss 302? You have to take the manifold off anyways to mount the supercharger 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • R2300 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
      • High Flow Fuel rail with 47 lb/hr fuel injectors
      • 85mm Supercharger Pulley
      • ROUSH PCM Flash Voucher Card
      • All necessary hardware
      • Installation Instructions

      Tech Specs

      Will It Fit My Mustang

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