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2596-285-BA

m285/m310 MRX Power Upgrade Kit [Mk7 Fiesta ST]

OBD flashing tool required?: No
The mountune m285 power upgrade utilises our extensively proven MRX Turbocharger Upgrade and offers Mk7 Fiesta ST owners greater power output with minimal increase in turbocharger lag, which greatly enhances the driving experience.
The m285 MRX turbocharger upgrade includes all required hardware, fittings and hoses along with our performance engine calibration and has been developed as a more than worthy successor to the much heralded MR265 upgrade and also provides a higher-output option for owners that have yet to upgrade their turbo.

Unlike other upgrades that deliver just peak or high RPM power, the m285 MRX Turbocharger offers performance throughout the entire power band ensuring a very responsive and drivable car. 

The MRX Turbocharger at the heart of the m285 upgrade is engineered around a genuine Garrett GT2554R core that features a custom engineered 11-blade billet compressor wheel and matching 3" inlet anti-surge compressor housing for incredible response and power. Developed as a complete system with everything available from one source ensures the performance and quality you’ve come to expect from mountune.



Turbocharger Features
  • Dual-row Ball Bearings - lowest friction and fastest spool/response
  • Water Cooled Center Section
  • Double seals on both turbine and compressor end for extreme durability and resistance to any oil seepage
  • Cast Stainless Steel exhaust adapter
Kit Features
  • mountune Stainless Steel V-Band Conversion
  • Pre-formed coolant lines ensure trouble free installation and performance
  • Pre-installed mountune Billet Wastegate Actuator
  • Turn-Key solution. 
    Required hardware
    • Upgraded intercooler - mountune large capacity recommended 
    • mountune complete intake or suitable option (induction kit and rear intake pipework)
    • mountune high-flow downpipe and cat-back exhaust, or similar.

    Please note: For customers wishing to install this upgrade themselves, we have used a third-party OBD flashing tool (you will require a laptop) to allow us to program your ECU remotely with our m285 calibration. A £300 (inc. VAT) surcharge will be added when this option is selected, but after updating your ECU, if you wish to return this device, a £300 refund will then be applied on receipt.

    Customer Reviews
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    Filter Reviews:
      TT
      09/10/2024
      Teemu T.
      Finland Finland

      Excellent m285

      The m285 big turbo kit for fiesta really transforms the car. You can immediately feel the power on higher revs. And quality of parts is great as always with Mountune products. Great kit!

      J
      07/11/2022
      James
      United Kingdom United Kingdom

      UNBELIEVABLE

      I had this installed by Fjrs alongside the spark plugs and rear isolators to complete the power upgrade side of things unless there’s more to come;) the tone of the car alongside the entire Mountune exhaust system is now deeper , louder and burbles a lot more. Several times it’s also popped whilst booting it giving you a huge smile , and as soon as you do hit boost you know you have to be mindful of what’s going on now I was shocked to say the least. Lovely little whistle esk sound as you let off boost and shift and I’ve actually noticed an improvement in my mpg! The turbo itself it a lovely looking this and massive compared to the stock one. Some pictures were kindly taken by Fred to show me what it looks like built up and a comparison of the two. All fittings are included all you need is a trip down to Fjrs and all supporting mods!

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