Jaguar has unveiled the latest edition to the XK family – the Jaguar XKR-S. Revealed at last week’s New York motor show, the £130,000 machine is currently limited to just 30 cars for the North American market – although a right-hand drive version is possible if UK demand is sufficient. Jaguar promises the XKR-S to be the ultimate road-going XK  At first glance, you’d expect significant change under the bonnet, but the current 542bhp 5.0-litre supercharged V8 engine and six-speed automatic gearbox are unchanged from the XKR-S. The most significant difference being the noticeable bodykit. Included in the new body-kit is a carbon fibre front splitter that protrudes 60mm in front of the front bumper, plus small carbon fibre winglets help to improve airflow efficiency, whilst helping keep the engine and brakes cool. Jaguar were inspired by their recent developments with the F-Type, manipulating experiences and features from suspension arms, uprights, wheels bearings, bushings and rear sub-frame designs. The XKR-S also features motorsport inspired twin-rate springs and revised height-adjustable dampers, which are 68% and 25% stiffer front and rear, than the current XKR-S.  The XKR-S GT becomes the first Jaguar to be fitted with carbon ceramic brakes. The introduction of these helps to shed a healthy 21kg of unnecessary weight.The specifically developed 20-inch alloys are wrapped in Pirelli Corsa tyres. The initial 25 cars are set for US customers, with the other five heading over the border to Canada. And if the GT reaches the UK market you can expect a four-point harness and a half roll cage.