Mk3 Focus RS M375 > m400R & Forged Engine Rebuild Bundle - Fully Fitted at mountune HQ

The mountune M375 > m400R power upgrade optimises the performance available from the 2.3-litre EcoBoost, whilst running a standard turbo.

This option is for customers already running our M375 Focus RS upgrade and that want to upgrade to m400R specification.

Utilising a selection of fully proven mountune hardware - some of which endorsed by Ford themselves, to help lower charge temperatures, improve pressure drops and remove back-pressure, means the engine is now able to operate more efficiency, allowing the impressive peak 400PS and 560Nm power and torque output to be more safely, and reliably achieved.

The mountune Focus RS EcoBoost forged engine rebuild has been designed in-house by mountune Racing as a high-performance upgrade for those wanting the ultimate pistons and connecting rods for reliable, high-power builds.

Featuring pistons which are manufactured exclusively for mountune in the US by MAHLE Motorsport utilising its 4032 grade alloy, and connecting rods made in the USA by Carrillo to our specifications.

This forged engine upgrade is an essential upgrade for Focus RS customers wishing to upgrade to m400 and beyond.

Kit Contents:

  • Full M375 > m400R hardware kit including:
  • Sound Suppression Chamber (SSC)
  • High-flow hard pipe
  • High-performance alloy intercooler
  • 3" downpipe with 200-cell sports catalyst
  • 3" V3 cat-back exhaust
  • mTune m400R calibration in-field update
  • Two mountune badges
  • Full Forged Engine Rebuild including:
  • Pistons
  • Connecting rods
  • Gaskets, seals & oil

Please note: the price shown for this product includes installation at mountune HQ in Hutton, Essex and is not transferrable to any other Ford dealer or installer.

Please specify your preferred installation date in the 'notes' section when checking-out; our workshop team will then contact you back to confirm this date. If we can't accommodate your preferred choice, the team will discuss with you other available dates, that are still acceptable to you.

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