https://www.cnet.com/roadshow/news/bentley-bentayga-speed-geneva-motor-show/

Providing all that performance is a reworked version of the Bentayga's 6.0-liter twin-turbo W12 engine, in this case dishing up 626 horsepower and 664 pound-feet of torque, the former an increase of 26 hp over the existing Bentayga W12. It's also an 84-hp gain over the available Bentayga V8. The SUV's Sport mode has been retuned, Bentley says, for better throttle responses, sportier exhaust sounds and a firmer ride from the Bentley Dynamic Ride active anti-roll system.

A big SUV traveling at 190 mph needs a lot of stopping power, so the Bentayga Speed is available with carbon-ceramic discs that Bentley claims are the largest on any production car. They were tested to withstand temperatures up to 1,832 degrees Fahrenheit and save 44.1 pounds versus the standard stoppers. The brakes hide behind 10-spoke 22-inch wheels.