Renntech declares 'Horsepower War' ongoing with new SLR 777

Mercedes-Benz's AMG arm has declared the horsepower war over two years in a row, all the while continuing to turn out new and improved - and more powerful - cars. Renntech has taken its cues from the spirit, if not the letter, of AMG's announcements with its latest modification, boosting the SLR supercar's output to a massive 777hp (580kW). Going a step beyond even its own previous SLR 722 package, the new Renntech 777 is the result of founder Hartmut Feyhl's relentless pursuit of more: more performance, more power, more impressive looks.