The Ford Focus RS is a performance driven car in its own respect and has already smashed multiple records.

But, the people at Hennessey are not going to give up easily. They have pushed the powertrain further to offer a much higher output.

When the Hennessey performance package is added to the Ford Focus RS, the car can deliver a stunning 405 horsepower coupled with 425 lb feet of torque. The 2017 Ford Focus RS without any tweaks made to the engine delivers about 350 horsepower with 350 lb feet of torque. While the numbers are high, they are nowhere close to what the RS delivers with the new package. The engineers have somehow managed to make it extremely powerful while keeping the car still usable by an average buyer.

The 2017 Ford Focus RS with a Hennessey HPE400 includes a high flow air filter, stainless steel exhaust, electronic dumps and reflashed ECU. The components work together to add a strong tone to the exhaust which makes it even louder than the engine already is. When you upgrade the Ford car with this special package, the company provides exclusive Hennessey badges to showcase that the model is integrated with special tweaks from the company. A powered by Hennessey badge is carved inside the hood.

Official specifications and performance of the add-on package is not revealed by the team yet. From what we know, the car can accelerate from 0 to 60 miles per hour in 4.5 seconds. The stock model achieves the same speed in 4.6 seconds but with the additional 50 horsepower combined with 75 lb feet of torque, there should be a slight decrease in the time it takes to go from 0 to 60 mph.

In their official blog, the company has confirmed that the Hennessey performance package for the RS will also includewheels, tires, intercoolerand other components. They are not being offered with the current package but those that get released in the near future will have lots of such fancy inclusions making the upgrade worth it.

There is no word on the pricing for the performance package. Hennessey has not revealed what the HPE400 will cost but it is definitely going to be much higher than what you might expect. The 2017 Ford Focus RS is a performance driven sports car and an upgrade package for the same is not going to be a budget friendly choice.