Porsche 997 GT3 RS 4.0

2011 Porsche 911 GT3 RS 4.0 – RM Sotheby’s

For the 997-generation 911, Porsche truly saved its best efforts for last, and the GT3 RS 4.0 was the culmination of years of testing on the open road and in the crucible of motorsport. Its engine was the most powerful normally aspirated flat-six built by Porsche at the time of its unveiling, producing 500 bhp at 8,250 rpm along with 339 foot-pounds of torque. This was thanks to a new intake manifold, new higher-flow air filters within carbon-fibre housings, less restrictive catalytic converters to reduce exhaust back pressure, Variocam-Plus variable valve timing, and a two-stage variable induction system. Even though the standard GT3 RS was certainly on a diet, Porsche managed to find a way to trim another 10 kilograms from its overall weight by fitting carbon-fibre front fenders and trunk lid along with titanium connecting rods and lighter interior trim, making it truly a thrill to drive.