The what-letters-now, you ask? FXX K. The name is drawn from the Enzo-based FXX that kicked off the company's client development program the better part of a decade ago, but with an extra letter tacked on to signify the KERS hybrid system on board. In the FXX K, that system has been further optimized: the electric motor now delivers 187 horsepower (instead of 160) and the 6.3-liter V12 has been boosted to 848 hp (up from 789) for a total output of 1,035 prancing ponies – a solid increase from the 950 hp in the road-going LaFerrari, but at 664 pound-feet, it's down in the torque department by 51 lb-ft.
Of course output isn't the end of the story, and as you can see the scarlet-clad engineers in Maranello have focused a considerable amount of energy on optimizing the aero package. The front end gets a two-part splitter derived from Ferrari's victorious GT racing program, with vertical fins along the flanks, side skirts extending between the wheels, a dynamic rear wing, vertical fin and a giant diffuser. All of this and more contributes to as much as 50 percent more downforce, aided by increased mechanical grip from the Pirelli racing slicks, with carbon-ceramic brake discs measuring 15 inches across (plus or minus, front to rear) to keep it all in check.
Unveiled at Ferrari's Finali Mondiali event at the Yas Marina Circuit in Abu Dhabi, the FXX K also boasts a recalibrated electronic differential, traction control, ABS, Racing SSC (Side Slip Angle Control) and a four-mode Manetinno dial on the center console to switch between levels of electric boost.
In short, Ferrari has pulled out all the stops, and we wouldn't be surprised to see the FXX K taking the Fiorano lap record for anything this side of an F1 car. The record is currently held by the 333 SP at 1:11, nine seconds ahead of the road-going LaFerrari's 1:20. That's roughly the same differential between the FXX and the Enzo on which it was based, or the 599XX Evoluzione and the 599 GTO. We're looking forward to seeing it try, but just how it stacks up against the P1 GTR which arch-rival McLaren is similarly developing, we may never know, as neither will ever take part in any racing series, bound as they'll both be by each company's client track program.
Maranello, 3rd December 2014 – Ferrari's new FXX K research and development programme receives its world premiere next weekend at the Yas Marina Circuit in Abu Dhabi. The laboratory-car is based on Maranello's first hybrid model and will grace the world's tracks from next year onwards. The K in its moniker is a reference to the "KERS" kinetic energy recovery system it adopts in maximising its track performance.
Unfettered by homologation and racing regulations, the FXX K will never be used in competition. It was, in fact, developed to be completely uncompromising, incorporating technological innovations that will guarantee an unprecedented driving experience to the exclusive group of Client-Test Drivers with whom the Prancing Horse will roll out a test programme over the coming two years.
The car's enormous potential is attested to by two significant figures: a total power output of 1050 cv (860 cv delivered by its conventional V12 engine and 190 by its electric motor) and maximum torque in excess of 900 Nm.
The FXX K's 6262 cc V12 features new camshafts and a modified valve train with mechanical rather than hydraulic tappets. The intake manifolds have been redesigned and given a special type of polishing treatment. The exhaust system has been modified as its silencers have been eliminated.
The HY-KERS system has been evolved specifically for pure performance with the result that the driver can control the function logics from the specific 4-setting Manettino on the centre console: Qualify, for maximum performance within a limited number of laps; Long Run to optimise performance consistency; Manual Boost for instant maximum torque delivery; and Fast Charge, for a fast recharge of the car's battery.
A focus on delivering maximum efficiency at every stage of every track lap has resulted in extensive but integrated work on the entire car body in terms of both active and passive aerodynamics.
The front of the car is dominated by a twin-profile spoiler and a larger splitter, which is 30 mm lower, with a gap in its centre. This design is an application of the concepts developed to improve aero balance in the GT category of the WEC, which Ferrari has won for three consecutive years. Two pairs of vertical elements, an endplate and, externally, a dive plane, together with vertical fins channel the air towards the car's flanks, generating a longitudinal vortex that creates a localised depression. This in turn sucks the wake from the wheels to the outside of the aerodynamic underbody. Along with the side skirts that extend out from the sills, the vortex helps isolate the airflow from the underbody to boost its efficiency.
The solutions on the rear of the car are highly sophisticated, too. The tail section is now higher and the mobile spoiler extends further for a total increase in extension of 60mm when fully deployed. A vertical fin and a small wing each side of the tail act as guide vanes in the low drag configuration and boost the spoiler's efficiency in the high downforce one. This system also creates considerable downforce at the rear of the car, allowing the use of an extreme diffusion volume for the rear diffuser which optimises air extraction from the underbody. The section of the flat underbody just ahead of the rear wheels is also exploited to the full to generate downforce thanks to the reduced pressure in the wheel arch guaranteed by the direct connection to the rear of the car by a by-pass duct.
The result is a 50% improvement in downforce in the low drag configuration and a 30% improvement in the more aggressive downforce configuration, resulting in a figure of 540 kg at 200 km/h.
Vehicle dynamics are further improved by the adoption of Pirelli slicks complete with sensors that monitor longitudinal, lateral and radial acceleration, as well as temperature and pressure. This ensures an accurate analysis of the interaction between the tyre and track surface, providing even more vital data to enable the traction control system to guarantee maximum performance.
The intervention level of the E-Diff electronic differential, F1-Trac traction control, Racing SSC (Side Slip Angle Control) - now specially calibrated to suit the car's slick tyres - and the high-performance ABS can be controlled using the five-position Manettino on the steering wheel.
|Total maximum power||1050 cv|
|Total maximum torque||>900 Nm|
|V12 maximum power*||860 cv @ 9200 rpm|
|Maximum revs||9250 rpm|
|V12 maximum torque||750 Nm @ 6500 rpm|
|Electric motor output||140 Kw (190 cv)|
|Bore and stroke||94 x 75.2 mm|
|Total displacement||6262 cc|
|Specific power||137 cv/l|
|Front||285/650 - R19 x10.5|
|Rear||345/725 - R20x13|
|Front||398 x 223 x 36 mm|
|Rear||380 x 253 x 34 mm|
|High perf ABS/EBD||Performance anti-lock system/electronic brake balance|
|EF1-Trac||F1 electronic traction control integrated with the hybrid system|
|E-Diff 3||third generation electronic differential|
|SCM-E Frs||magnetorheological damping with twin solenoids (Al-Ni tube)|