In place of a fixed roof the Roadster has a choice of carbonfibre or fabric lids, but it bucks the trend of most convertibles by being 80kg lighter than its coupé sibling. The car also features the same active aerodynamic flaps as the coupé.
The car uses a version of the Huayra’s Mercedes-AMG M158 twin-turbocharged 6.0-litre V12, reworked to produce a peak output of 754bhp at 6200rpm – 34bhp more than the coupé and 15bhp more than even the hardcore Huayra BC. Combined with a 1280kg dry weight, the Roadster has a power-to-weight ratio of 589bhp per tonne, or 47bhp per tonne more than the coupé.
The rear-mounted V12's turbochargers have been revised to provide more immediate throttle response, with peak torque of 738lb ft now arriving at 2400rpm.
The Huayra Roadster's electronic stability control (ESC) system features five modes: Wet, Comfort, Sport, Race and ESC off.
Drive is sent to the rear wheels via the same seven-speed automated manual gearbox as used by the Huayra BC. The Xtrac transmission uses a hydraulic and electronic activated shift mechanism and and is said to be approximately 40% lighter than a most dual-clutch automatic gearbox set-ups.
Key to the Roadster's light weight is its so-called Carbo-Titanium and Carbo-Triax HP52 monocoque. The structure, which uses a material that Pagani claims is more advanced than that used to build Formula 1 cars, is said to be 52% stiffer but identical in weight to the coupé’s.
The car sits on all-aluminium alloy suspension system that is said to be 25% lighter than that of the coupé. Pagani says the car has been set up to understeer slightly at the limit in order to make it more predictable. The car is said to be capable of reaching 1.8g of lateral force.
Braking is by Brembo carbon-ceramic discs of 380mm in diameter front and rear. Six-piston calipers are used at the front, while four-piston units work at the rear. Wheels are 20in front and 21in rear forged aluminium, wearing in Pirelli Pzero Corsa tyres in a specification bespoke to the Huayra Roadster.
Production of the Huayra Roadster is under way and all cars have been allocated to customers.
Video review of Pagani Huayra