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Mountune unlocks yet more power from the Ford Focus RS

Published: 08 August 2017

Mountune ups the ante for the Focus RS
Latest upgrades bring more performance
► Quaife ATB diff also now available 

Not content with upping the Ford Focus RS’s already-generous 316bhp to 374bhp, performance tuner Mountune has announced another raft of upgrades for the lairy fast Ford.

As if it needed more power…

Quite. But that hasn’t stopped Mountune eking more out of Ford’s in-your-face hatch. The Mountune Ford Focus RS M400 produces 394bhp and 413lb ft of torque thanks to a range of upgrades available to regular RS owners, and those who’ve already tinkered with it to fit the company’s MP375 pack released last year.

Included in the upgrade kit (available at a cost of £3495 to upgrade from a regular RS), you’ll get a new high-flow induction kit, tweaked re-circulation valve for the turbo, new intercooler, ECU, new three-inch cat-back exhaust and an mTune handset for data logging and further fun features like a 0-60mph timer, quarter-mile times and a Dyno mode.

If you’re stepping up from the M375, the necessary bits and bobs to fill the gaps are available at lower cost, since Mountune’s kits are available in a modular form.

What about warranty?

Good point. According to Mountune’s website, this particular upgrade is not a Ford-endorsed one, and may affect the warranty of the car that’s being upgraded.

Some won’t be bothered if they’re getting an even faster Focus RS, but don’t say we didn’t warn you…

It’s not all about Mountune

It’s been announced today that Ford Performance – the Blue Oval’s performance division (duh) – has chosen to use a Quaife ATB Differential as an official performance option for the Focus RS.

There’s history between these two companies, with both previous Focus RS models having received the Quaife treatment.

According to Quaife, the new differential is all about ‘accessible performance at its finest’, using helical gears as opposed to clutch plates, to avoid fade.

‘Raw mechanical grip’ is the order of the day, working in combination with Ford’s catchily named Dynamic Torque-Vectoring All-Wheel Drive system. Judging by the levels of grip we’ve already experienced in the Focus RS, this could be an impressive add-on.

The differential kit is available as part of the Mk3 Focus RS Options Pack.

By Tom Goodlad

Senior reviewer on our sister website Parkers

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