[kach22i]

The car has a bespoke 4.1-liter race engine with new internals, gearbox, clutch and drive shafts, along with an upgraded E85 fuel system and sophisticated charge cooling set-up to stop engine detonation. It also has an upgraded PDK transmission and altered suspension to allow it to clear the sand...................

"The Porsche behaves very differently on sand than tarmac," he said. "The sand creates a lot of resistance and tire slip. In the end, we could only use 850 hp (1,000 hp at the engine) to avoid too much wheel spin, compared to just 533 hp (engine) from a factory car."

Eisenberg's records not only follow on from his hero Campbell, who first set the record at Pendine Sands in 1927 (174.8 mph/ 281.3 kph) in the iconic Blue Bird – a record that stood for nearly 90 years, but it also beat the one previous record set by actor Idris Elba in 2015.

Very interesting, and it doesn't look too exotic aerodynamically speaking.

They put all the effort into the mechanicals.

EDIT: back in Feb 2019 this is the image they used (see below).

Zef Eisenberg and MADMAX Race Team to attempt 'fastest car on sand' record
https://www.racecar.com/News/90237/Motorsport/Zef-Eisenberg-and-MADMAX-Race-Team-to-attempt-fastest-car-on-sand-record

It got Zef thinking, so after meticulous research into what would be needed to top 200mph on sand, Eisenberg settled on a 2015 550hp Porsche 911 Turbo S. There was just one problem: Although this car is very fast, it will ‘only do 175mph’ in a mile on Tarmac. To achieve 200mph on tarmac within a mile would, the car would need 750bhp at the wheels. Sand creates a lot of resistance and tyre slip, so we worked out that we’d need at least 1000 bhp at the rear wheels, which equates to a crazy 1200hp at the engine, compared to just 550hp from the factory.

The MADMAX race team therefore hand built a bespoke 4.2-litre Porsche motorsport engine with new stronger internals, upgraded Turbo’s, plus a new E85 fuel system, advanced cooling set-up and far more. A lot of work was done to ensure that the monstrous power would come in as smoothly as possible in order to limit wheelspin on the loose surface. To cope with such an extreme output, the gearbox and clutch needed to be extensively upgraded, and the brakes and suspension modified to allow for different wheels and tyres.