The Mountune Racing package for the Ford Focus RS is based on the hardware from the market-leading RS500 / MP350 upgrade but additionally includes; a replacement larger EC-approved 3" downpipe with anti-loosen bolts, a 200-cell EC sports catalyst, EC EURO or UK-spec 3" cat-back exhaust, a cast inlet plenum, Mountune re-circulating bypass valve and a revised engine calibration for the potent 2.5-litre Duratec RS engine. 

Once upgraded power increases from either 305PS (standard) or 350PS (RS500/MP350), to 375PS at 6700rpm and torque is raised from 440Nm (standard) to 550Nm at 3,500rpm. 

The MR375 will produce performance returns of 0-60mph in 5.0 seconds, a 0.9 second improvement over the standard RS, and 0-100mph in 11.3 seconds, continuing on to a top speed of 165mph.

This upgrade can be fitted to any model year of Focus RS, new or used, and has a minimum 12 months/12,000-mile warranty on all parts fitted. As a Mountune Racing upgrade this kit does not benefit from the same warranty arrangement as Mountune Performance products and may invalidate your base vehicle warranty. 

Please note: As part of the calibration update process the original vehicle ECU will need to be returned to Mountune - a range of optional same-day courier services are also available to UK customers for this purpose at additional cost subject to location - please ask for more details.

Mountune Dealer network:

The Mountune Racing MR375 conversion is available from Mountune directly, and from eleven specially selected Mountune PRO Ford dealerships from throughout the UK priced at £3750 inc VAT (plus fitting) or £2000 inc VAT (plus fitting) if upgrading from RS500 or MP350: