What is it?
A new upgrade package is available for the already stellar Ford Focus RS, wrapping up some of our favourite options and adding a new Quaife limited slip differential to the front axle.
The Recaro shell seats, forged 19in wheels, Luxury Pack and Nitrous Blue colour-coded Brembo calipers are all options available on the existing RS - and desirable ones at that. To set the RS Edition car apart, Ford has added matt black mirrors and roof and rear wing, with the latter also getting prominent RS badges on its sides.
But it’s the mechanical upgrade to the all-wheel-drive powertrain that’s of most interest. By adding a Quaife Automatic Torque Biasing differential to the front axle, Ford is offering RS owners who want to make the most of the 345hp delivered by the 2.3-litre turbocharged engine even more scope for doing so.
Put simply, where the standard RS uses its torque vectoring rear axle to push the car through its natural tendency to understeer, the new differential puts greater emphasis on the front axle. Previous front-driven RS models have used Quaife differentials to the same ends; its addition to the current all-wheel-drive model follows a similar move by Mercedes-AMG, which added a front diff option with the Dynamic Plus package on the revised 376bhp A45.
It also gives the RS an additional technical edge over the recently updated but mechanically less sophisticated Golf R, the Volkswagen relying on a regular Haldex-style all-wheel-drive system with brake-activated torque vectoring in place of mechanical locking differentials.