The 911 GT3 nameplate was introduced in 1999 as a spiritual successor to the 1973 911 RS. The RS name was first revived in 2003 as a more powerful and track-focused version of the 996-generation GT3. At first motivated by a 3.6-liter flat-six rated at 381 horsepower, the RS gained 415 ponies when the 997-gen version was launched. Updated for 2009, the 997 RS received a 3.8-liter six-cylinder with 450 horses. For 2011, Porsche launched the GT3 RS 4.0 with a 4.0-liter engine and 500 ponies, putting an end to the 997-generation RS. In 2015, four years since the last RS rolled off the assembly line, the nameplate is making a comeback for the 991-generation 911. Preceded by the 475-horsepower GT3 in 2013, the new GT3 RS broke cover at the 2015 Geneva Motor Show with updated styling and technology.