Based on a 981 Boxster, the result was a single-seater sports car without a top, door handles or windscreen. As with the Porsche hillclimb racing cars from the late 1960s, there was only a flat, transparent wind deflector which extended around the driver and ended at the doors. The team of engineers and designers created a cover to extend from the windscreen to the engine compartment. This tarpaulin paid homage to the 1954 Porsche 356 Speedster.
It was made initially of imitation leather, with a carbon fibre component planned for the next developmental stage, which was also the material for both rear and front lids. The dashboard underwent a complete redesign, fitted with elements from the Porsche 918 Spyder and assembled in the style of the super sports car. The seat also originated from the 918 technology platform. The passenger door could be opened, with another luggage compartment concealed behind it to provide space for a helmet shelf, a removable cover for the driver's seat and additional luggage.
After undergoing lightweight design treatment including minimal insulation material and weight-optimised components, the ready-to-drive 981 Bergspyder weighed 1,099 kg. Powered by the 3.8-litre 289 kW (393 PS) boxer engine from the Cayman GT4, the Bergspyder had a power-to-weight ratio of almost 2.8 kg per PS. Acceleration figures of just over four seconds from zero to 100 km/h and a Nürburgring time of around 7:30 minutes were close to becoming reality.
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