Once the RS Spyder project comes to an end, as planned, Porsche will once again be focusing on the GT2 class in this year's ALMS. The GT vehicle near-series class promises even more competition than in the previous season. In an effort to follow up on past successes, the 911 GT3 RSR was enhanced over the winter and adapted to comply with changes in the rules.

The 911 GT3 RSR is an established feature of GT sport. Since it was launched in 1999 as the 911 GT3 R (996), it has achieved numerous class and championship wins, including Le Mans. It has also been successful in the ALMS and the FIA GT. The standard vehicle is the 911 GT3 RS standard production sports car (type 997).

Even a cursory glance reveals the differences between the current 911 GT3 RSR and its predecessor. The ventilation slots in the bonnet, known as louvers, are the most striking change, hinting at the completely revamped air guide on the radiator, which had to be redesigned due to the rearrangement of the outgoing and supply air when installing the optional air-conditioning system. The aerodynamics have also been optimised further. The new rear wing provides an extended adjustment range. Due to the requirement for a further reduction in the size of the air-restrictor, the 4-litre flat engine generates roughly 450 bhp at 7,800 rpm and delivers a maximum torque of 430 Nm at 7,250 rpm.

In the 2009 season, the Flying Lizard Motorsports, Farnbacher Loles Racing and VICI Racing teams entered several 911 GT3 RSR vehicles in the ALMS. As is usual with Porsche, works drivers Jörg Bergmeister, Patrick Long and Wolf Henzler drove alongside experienced private drivers like Johannes van Overbeek, Seth Neiman, Darren Law and Dirk Werner.