Polaris RZR Pro R Factory Boost packs 400hp, more than an Audi RS3

Polaris has unveiled the RZR Pro R Factory Boost, a desert-racing side-by-side powered by a 400hp turbocharged ProStar Fury 2.0 four-cylinder engine. That is more than the 394hp of the US-market Audi RS3. The standard Pro R Boost makes 275hp. The new machine will make its debut at the 2027 King of the Hammers off-road race.