The model improvements of the 997-generation 911 GT3 the appeared in 2006. Compared to its predecessors, much of the equipment was now on board as standard, such as the
From MY 2009, the reworked high-performance naturally aspirated engine delivered 320 kW (435 PS) instead of the previous 305 kW (415 PS).
Those who wanted even more than the GT3 had to offer could also order the 911 GT3 RS with 305 kW (415 PS) from 2006. This version was even more rigorously equipped for racing. In its final stage of evolution, as the 911 GT3 RS 4.0, it delivered a total of 368 kW (500 PS).