Jaguar XKR-S GT for USA only
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19th May, 2013
- The Jaguar XKR-S GT is the ultimate road-going, track-ready XK coupe
- Developed by Jaguar's ETO division, production limited to just 30 cars
- Jaguar XKR-S GT is rarest model in 25-year history of Jaguar R performance cars
- XKR-S GT features bespoke aerodynamic aids for maximum downforce of 145kg
- Carbon ceramic brake system standard - a first for a production Jaguar
- Bespoke adaptive dampers are eight-way adjustable with race-derived twin spring system
- Front track, camber, bushings and steering ratio all revised for high-performance GT
- Six-speed automatic transmission with paddle shifters, active electronic differential
- Powered by Jaguar's supercharged 5.0-litre V8 engine, producing 550PS and 680Nm
- 0-60 takes just 3.9 seconds
- New 20-inch forged, lightweight alloy wheels with Pirelli Corsa tyres
JAGUAR XKR-S GT IN DETAIL
"The XKR-S GT is the most extreme iteration of the Jaguar R Brand's performance focus. Utilising race-car derived
technology, all-aluminium construction and an uncompromised approach to aerodynamic efficiency, the result is a car as
capable on the track as it is exhilarating on the road." said Adrian Hallmark, Global Brand Director, Jaguar.
The XKR-S GT has been developed by Jaguar's ETO division to be the ultimate track-focused but road-going iteration of
the XK coupe. Extensive aerodynamic and suspension changes, as well as the addition of carbon ceramic brakes, have
combined to give the XKR-S GT race-car inspired connected feel and braking performance. Initial production will be
limited to just 30 cars for the North American market.
A range of bespoke carbon fibre components, including an extended front splitter, dive-planes and elevated rear wing,
all work to maximise the XKR-S GT's aerodynamic downforce. Technical learning from the development of the new Jaguar
F-TYPE two-seater sports car has also been applied to the XKR-S GT's suspension and steering systems, optimising both
immediacy of response to driver input and agility.
Stunning performance is provided by Jaguar's proven 5.0-litre supercharged V8 engine, boasting 550PS and 680Nm,
driving through a six-speed transmission and active electronic differential. Combined with the aerodynamic and suspension
changes, plus revisions to the traction control system's calibration, the result in straight-line terms is a 0-60mph time
of 3.9 seconds. Electronically limited top speed is 300km/h.
The Jaguar XKR-S GT is available in Polaris White with unique graphics and Jaguar R-S GT script on its louvred bonnet.
The warm charcoal interior - with red accents - features 16-way electrically adjustable 'Performance' seats finished in
soft-grain Warm Charcoal leather and Suedecloth with the Jaguar and R-S GT scripts integrated into the backrests. Jet
Suedecloth headlining and a Jet Suedecloth steering wheel, with aluminium paddle shifters, are fitted as standard. Script
to the treadplates and console highlight the exclusiveness of the XKR-S GT.
"The development of the XKR-S GT demanded an uncompromised approach to enhance aerodynamic downforce, with
complementary suspension changes to maximise high-speed cornering ability. In combination with the use of a carbon
ceramic braking system, the result is the most focused 'R' model Jaguar has ever built which delivers heightened levels
of performance and driver reward." said Pete Simkin, Director, ETO Specialist Products, Jaguar.
AERODYNAMICS AND CHASSIS
"The XKR-S GT has been designed purely by the laws of physics. It has been developed in the wind tunnel and on the
race track with the sole aim of creating as much high-speed stability and downforce as possible. Nothing has been styled
for the sake of it. It's been an exercise in efficiency and the result is a car that's raw, focused and devastatingly
quick." said Ian Callum, Director of Design, Jaguar.
The Jaguar XKR-S GT features a carbon-fibre front splitter of race car wrap-around type; extending forward by 60mm, it
starts the optimisation of airflow around, over and underneath the car. Aggressive carbon-fibre twin dive-planes and
wheel arch extensions further the efficiency of airflow around the car, while below the addition of an optimised
aluminium front valance serves to smooth airflow under the car as well as enhancing engine and brake cooling
performance.
A rear carbon fibre diffuser ensures the smooth exit of air from underneath the car, while the elevated rear wing -
also in carbon fibre - works in combination with the bootlid mounted spoiler to maximise rear downforce. At its
electronically limited top speed of 186mph, the XKR-S GT produces 145kg (320lb) of downforce. Bonnet louvres serve as a
further engine cooling aid while also helping aerodynamic performance by improving the airflow through the front end of
the car.
Allied to the extensive aerodynamic revisions are detailed suspension changes. The front and rear suspension arms,
uprights, wheel bearings, bushings and rear subframe are all new and draw on hardware developed for the F-TYPE. The
overall set-up works to increase lateral suspension stiffness for greater precision and responsiveness.
Integral to the revised suspension system is its new spring and damper module design. The XKR-S GT has a motor
sport-derived twin spring system matched to Jaguar's Adaptive Dynamics damping system - the dampers now being ride-height
adjustable. Front and rear spring rates are respectively 68% and 25% stiffer than on the XKR-S, while the damper tune is
much more track-focused, providing increased levels of body control and grip.
Jaguar's Adaptive Dynamics have been specifically tuned for the XKR-S GT so that the suspension parameters change to
deliver a higher level of body control with maximum traction and grip when the dynamic mode is deployed, offering optimum
performance for focused track driving.
The XKR-S GT has a front track which is 52mm wider than that of the XKR-S while the rear remains the same. The
steering rack is from the F-TYPE, with a correspondingly faster ratio and retuned steering valve. The result is immediacy
of turn-in and response to steering inputs.
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The unique 20-inch forged and lightweight alloy wheels - finished in gloss black - are shod with specially developed
Pirelli Corsa performance tyres (255/35 and 305/30 front/rear), giving the XKR-S GT a more muscular stance and greatly
increasing its grip and stability.
"The XKR-S GT is an uncompromised car, but one that inspires confidence and encourages the driver to push it to its
limits, fully exploring its handling abilities. It's a car that draws you in and is never intimidating, with performance
that is both accessible and rewarding." David Pook, Technical Specialist, Steering and Handling, Jaguar.
BRAKES
The Jaguar XKR-S GT is the first production Jaguar to be fitted with a carbon ceramic braking system.
The internally ventilated and cross-drilled lightweight brake discs measure 398mm and 380mm front/rear respectively.
Combined with six-piston monobloc callipers at the front and four piston units at the rear - the yellow callipers being
branded with 'Jaguar Carbon Ceramic' script - the XKR-S GT delivers race car levels of fade-free stopping power and brake
pedal feel.
Enhanced braking feel comes courtesy of the electronic Pre-Fill system. Working in conjunction with the car's DSC
system, Pre-Fill pressurises the brakes every time the driver comes off the throttle pedal, resulting in a very short and
consistent level of travel on the brake pedal. This maximises braking response, reduces the car's stopping distance and
delivers increased levels of confidence during high performance driving.
The lightweight nature of the carbon ceramic system means a reduction in unsprung weight of 21kg - so further
enhancing the XKR-S GT's handling.
The XKR-S GT's carbon ceramic braking system also has a significantly longer life span than a standard system.
"The brake disc and pad materials are specially tailored for Jaguar characteristics. Because the XKR-S GT is a road
car as well as one suitable for customers to take on the track, we engineered it for race-car braking performance but
with no compromise to cold or wet weather ability." said Edward Nixon, Group Leader, Brakes, Jaguar XKR-S GT.
PERFORMANCE
Jaguar's proven all-aluminium 5.0-litre supercharged quad-cam V8 engine, boasting 550PS and 680Nm of torque, delivers
not only exhilarating performance but also tremendous efficiency thanks to the technologies incorporated into it,
including spray-guided direct injection (SGDI) and dual independent variable cam timing (DIVCT).
The high-pressure die-cast lightweight aluminium block is stiffened with cast-iron liners and cross-bolted main
bearing caps, providing refinement to match its power. The four-valve cylinder heads are constructed from recycled
aluminium, between them sitting the Roots-type twin vortex supercharger fed by two intercoolers, which feature their own
water-cooling circuit to reduce the temperature of the pressurised air thereby optimising power and efficiency.
The Jaguar XKR-S GT features a fully active performance exhaust system with valves that open under load, both
enhancing gas-flow and the car's aural character, while optimising power output.
In straight-line terms, the powertrain's significant output, combined with the aerodynamic, suspension and traction
control software revisions, mean the XKR-S GT can sprint from 0 to 60mph in 3.9 seconds.
TECHNICAL SPECIFICATIONS
| JAGUAR XKR-S GT |
| Engine |
5.0-litre V8 supercharged petrol |
| Capacity (cc) |
5,000 |
| Bore/Stroke (mm) |
92.5/93 |
| Peak Power (PS@rpm) |
550 @ 6,500 |
| Peak Power (kW@rpm) |
405 @ 6,500 |
| Peak Torque (lb/ft @rpm) |
502 @ 2,500-5,500 |
| Peak Torque (Nm@rpm) |
680 @ 2,500-5,500 |
| Transmission |
Six-Speed Automatic, RWD |
| 0-60mph (secs) |
3.9 |
| Top Speed (mph | km/h) |
186 | 300 (Electronically Limited) |
| Combined Economy [MPG] |
23.0 |
| CO2 Emissions (g/km) |
292 |
TECHNICAL CHANGES VERSUS JAGUAR XKR
- Carbon ceramic brake system with 398mm and 380mm discs front/rear, gripped respectively by six- and four-piston
monobloc callipers
- Electronic Pre-Fill system pressurises braking system and maximises braking performance
- Addition of carbon fibre front splitter, dive planes, extended wheel arch spats, an elevated rear wing, a rear
diffuser and an optimised aluminium front valance contribute to a maximum downforce figure of 145kg (320lb) at the
XKR-S GT's electronically limited top speed of 186mph (300km/h)
- The addition of race-derived, height-adjustable and retuned adaptive dampers with twin-spring system. Spring rates up
by 68% at the front and 25% at the rear
- New development of front and rear suspension from the F-TYPE sports car
- The fitment of an F-TYPE steering rack for enhanced agility
- New, wider 20-inch forged alloy wheels shod with Pirelli Corsa 255/35 front and 305/30 rear tyres for maximised
grip
- Bonnet louvres aid engine cooling and reduce under-bonnet air pressure
About ETO
The XKR-S GT is the latest car developed by Jaguar Land Rover's specialist ETO division. The division is responsible
for extending the Jaguar and Land Rover brands with a series of 'special edition' models as well as a range of
personalisation options allowing owners to tailor their cars. The designers and engineers in ETO work alongside the JLR
Product Development teams on future products with a focus on offering additional luxury, performance and capability,
exploring different facets of the brands' personalities. Previous Jaguar models developed by ETO include the XKR-S, the
XJ Ultimate and the XFR-S.
E&OE.
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