Ford’s all but confirmed the Focus RS500, but that hasn’t scared US tuner Hennessey Performance from forging its own super Focus.

Those too impatient for Ford to greenlight its meaner, fitter Focus RS can turn to Hennessey Performance, as its new HPE400 kit is claimed to bump a stock RS’s power to 298kW/576Nm.

Hennessey Ford Focus RS badge

More impressive is the extra 41kW and 106Nm are unlocked with only a few parts, which are relatively light by Hennessey’s standards.

New engine management software ups the 2.3-litre inline-four’s brain capacity, while a new ‘high-flow’ air filter will feed its hard-working turbo much needed extra air.

Hennessey Ford Focus RS engine

There’ll be a slew of badges, too, to slap on upgraded cars, which label them as a “HPE400” and “Powered by Hennessey”.

All up it’s reported the parts alone cost US$2995 (AUD$3980), but HPE will throw in a dyno tune for a total of US$4995 (AUD$6636).

Hennessey Ford Focus RS front

While Mountune’s kit is warranty backed in the UK (Ford Oz is yet to announce it’s coming here), as will be whatever Ford Performance comes up with for the RS500. Hennessey Performance promises to serve the more adventurous, announcing intercooler systems and turbo upgrades to come for the Ford Focus RS.

Stay tuned.