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mountune MR300 Complete Performance Upgrade - Focus ST 2013-2018
mountune MR300 Complete Performance Upgrade - Focus ST 2013-2018

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Sale price:$2,919.00
Savings: $180.00

Availability: Out of stock, more coming soon !
Product Code: 2363-300-AA

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mountune MR300 Complete Performance Upgrade


Focus ST 2013-2018

The mountune Racing MR300 upgrade offers Focus ST owners the chance to upgrade to a genuine 300HP and 350 lb. ft experience - the highest power and torque output reliably achievable using the OE turbocharger. Touching on our motorsport DNA, our engineers have developed the mountune MR300 upgrade to maximize the performance of the Focus ST while maintaining excellent drivability. The MR300 upgrade includes required hardware along with a revised engine calibration that optimizes power and torque that results in impressive power and response. The MR300 is a complete upgrade package that takes the guesswork out of upgrading your Focus ST to maximum reliable power. Every component included in the MR300 upgrade is of the highest quality and backed by over 35 years of engineering and motorsport success.

Included in this kit:

  • Large-capacity alloy intercooler
  • Low-loss cast crossover duct with silicone hose- 2363-CAIS-BB
  • High-flow dual-entry air filter - 2363-AF-AA
  • High-flow 2.5" bore cat-back exhaust - 2363-CBE-AA
  • High-flow charge pipe upgrade kit - 2363-CPK-BLK
  • High-flow silicone induction hose - 2363-IH-BLK
  • mTune handset loaded with MR300 calibration
  • mountune badge set
  • Optional painted on mountune logo can be applied with included stencil


This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards. Click Here for Emissions compliance information.

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 4 Write a review »

  0 of 1 people found the following review helpful:
4 of 5 MR300 kit. March 5, 2017
Reviewer: DEVOY GILBERT from CHATTANOOGA, TN United States  
Great upgrade !

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  0 of 0 people found the following review helpful:
5 of 5 MR300 on my 2015 Focus ST3 August 24, 2016
Reviewer: Shawn Adams - Adame Motorsports from Edmond, OK United States  
Stepping up from the MP275 to the MR300 is a day to night difference.  First most noticeable is the throttle response right out of 1st gear.  The torque in the mid gears and up is phenomenal.  Keep in mind this is a conservative tune, though I never feel at any time that I am pushing the engine to a dangerous zone.  The exhaust is much quieter to others on the market, a bit more aggressive than stock, exactly what I was looking for.  All the parts are quality engineered, noticeable right out of the box.

Installation of all parts should be done on a lift for ease and for properly securing all the hoses and clamps.  My friend who helped install all the parts only commented that the exhaust was a tight fit between the chassis and brace.

The only thing I hope becomes available for the mTune AP is an unlock in order to be able to upgrade tunes beyond the MR300 level.

Overall I am extremely satisfied with the promised power and quality engineering of the parts Mountune provides.

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  0 of 0 people found the following review helpful:
5 of 5 2016 Ford Focus ST May 22, 2016
Reviewer: Alan's Black ST3 from Rio Rancho, NM United States  
Great kit; noticeable difference when all is installed. Not to difficult to install as long as you follow the instructions.  It's to bad that the exhaust is under the car this is a beautiful piece of art.  The sound is not an annoying tuner car sound but a slight rumble over stock.  The air that is being taken in by the intake and intercooler are noticeable and heard slightly.  Take your time installing this kit and have some patience removing OEM parts and the final result is well worth the effort.

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  0 of 0 people found the following review helpful:
5 of 5 MR300 April 20, 2016
Reviewer: Lucian Munteanu from Douglasville, GA United States  
Ordered the MR300 kit however I requested the MP275 software for now. Like any other Mountune product the build quality of all components as well as the fit is perfect. I think the installation instructions for the intercooler could be a little bit more explicit but if you take your time you should be good. Basically the intercooler attaches with two brackets right under the radiator/ AC condenser support bracket. There are 2 aluminum spacers that will have to be used in between the FMIC and the support bracket on each side. Longer bolts are supplied to be used with the spacers of course. Please make sure you push the FMIC all the way towards the passenger side for clearance purposes. Everything else (boost hoses, charge pipe, cold air intake, etc.) is pretty straight forward. I am very happy with the outcome. As far as the power goes, you better hold on, even with the MP275 map. The throttle response is different and it seems that boost is delivered in a more linear way.

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