Just like the sold-out coupe, it will be built in a limited run of 765 units.
Like a thunderstorm during a summer joy ride in a convertible, McLaren has just unveiled its most powerful open-top supercar to date. The 765LT Spider follows the proven formula of its coupe counterpart mixing a high-performance powertrain with a lightweight body and a motorsport-inspired cabin.
The automaker promises the convertible will offer the same levels of structural rigidity as the 765LT Coupe and this comes at the cost of just 108 pounds (49 kilograms) additional weight, primarily from the retractable hardtop and accompanying operating mechanism. Compared to the 720S Spider, the 765LT Spider is about 176 lbs (80 kg) lighter at 3,060 lbs (1,388 kg).
The electrically operated hardtop is a one-piece carbon fiber component that can be folded in just 11 seconds at speeds of up to 31 miles per hour (50 kilometers per hour). McLaren is proud to announce that the strength and stiffness of the structure are so high that no additional bracing is required over the coupe. Carbon fiber structural supports at the back of the car provide rollover protection.
For the full story, check out this article from Motor 1.