The engine was designed by Harley Davidson back in the 1990 's with assistance with Porsche AG .
The Roehr 1250sc is powered by a 180hp , specially developed version of the Harley - Davidson * V - Rod * engine .
The engine was designed by Harley - Davidson   back in the 1990 's with assistance with Porsche AG .
The Roehr 1250sc is powered by a 180hp , specially developed version of the Harley - Davidson * V - Rod * engine .