Roadsters and convertibles tend to be marginally heavier than their closed counterparts, but that is not the case with Pagani. The Huayra roadster is roughly 176 pounds lighter, thanks to using a very stiff carbon-titanium chassis tub and a 25 percent lighter HiForge suspension. It's absolutely not a Sawzall job, as most every piece of the Huayra has been given a once-over to make it into roadster specification.
The Mercedes-AMG engine has also been upgraded, and it now produces 753 horsepower, with over 738 pound-feet of torque – the coupe "only" managed 720 horsepower. It is a V12 biturbo unit, and the turbos have been attended to for better throttle response, according to Pagani. There is also dry-sump lubrication. The gearbox is a new X-Trac seven-speed one, and it's an automated manual instead of the dual-clutch unit in the coupe. The reasons given for an "older tech" box is that it is up to 40 percent lighter, which suits the roadster best. X-Trac is a British engineering company specializing in racing gearboxes, and is the official partner of the Mercedes AMG Petronas F1 Team.
Depending of weather conditions, there are two roof systems designed for the Huayra roadster. One is a detachable hardtop made of carbon fiber and glass, and the other is a fabric job that is more aptly designed for sudden downpours.
Pagani has priced the Huayra roadster at $2.4 million. Sadly, it is too late to order one, as all 100 units have already been sold.