Replacing substantial sections of the bodywork with carbon-fibre panels, plus weight reduction in other critical areas has resulted in a saving of around 300kg, bringing the DIN standard weight to a shade under 1,300kg. This makes for a power-to-weight ratio of 663bhp/ton!
New 12×20- front and 12.5×21-inch rear IMSA Racing lightweight forged alloy wheels, wrapped in 305/30 and 315/30 Pirelli P Zero Trofeo R tires hide massive carbon ceramic brakes and transfer all the power to the ground.
The wider tracks are covered by carbon-fibre wings that are 55mm wider per side (110mm overall) in front, and 65mm wider per side (130mm overall) at the rear. In comparison, the factory AMG GT R is 57mm wider at the rear than the GT S, but is only 15kg lighter. The wider arches of the RXR One are optically and functionally linked by the deep side-skirts that enhance the ground effect generated by the cars completely flat bottom. Other bespoke carbon-fibre body components are the complete front bumper/spoiler assembly. The bonnet, roof, boot-lid, and rear wing are other major components made from autoclaved carbon-fibre.
The 4.0-liter V8 twin-turbo engine has been completely redesigned (crankshaft, pistons and connecting rods replaced by reinforced forgings). Larger turbochargers and newly developed intercoolers as well as a reduced-pressure exhaust system were used. Then the power is 860 hp and 1000 Nm max. Torque.