The GT3 variant debuted at the 2006 Geneva Motor Show alongside the 997 Turbo.
Like previous GT3 models, it is a way for Porsche to homologate aerodynamic features for racing, as well as to offer race cars for customer teams.
The 997 GT3 was priced at US$106,000.
The engine has the same displacement as the Turbo, but does away with the turbochargers and uses a new variable intake system.
The engine is rated at 415 PS (305 kW; 409 bhp) and 405 N⋅m (299 lb⋅ft) of torque.
It has an 8,400 rpm redline matching that of the Carrera GT flagship.
The 3.6 L dry-sump engine does not suffer from the rear main seal problems of the earlier 3.6 L/3.8 L integrated dry-sump engines.

The GT3's body work includes a special front bumper which increases cooling for the front-mounted radiators as well as a split spoiler at the rear.
The GT3 also includes a special rear bumper and center tailpipes which draw heat away from the engine.
The suspension system is lowered and the car utilises 30-series 305 mm (12 in) tyres and 19 in (483 mm) wheels.
The car weighs 1,395 kg (3,075 lb).

The 997 GT3 is more driver-friendly than its predecessor, with "comfort" seats and the Porsche Communication Management system installed.

The special RS model came without most of these luxuries to focus more on track-orientated driving (although the car is still road-legal).
The RS trim also included a full roll cage and carbon fibre seats along with a large fixed rear wing to add to that race-car-for-the-road feel.
The RS version was introduced in Europe in October 2006; the North American release was in March 2007.
A racing version of the GT3 RS debuted in 2007, and it was called the 997 GT3 RSR.

The ratios on the six-speed transmission are closer, allowing the GT3 to reach 97 km/h (60 mph) in 4.1 seconds, while the RS accomplishes the same in exactly 4 seconds.
The GT3 will continue to 161 km/h (100 mph) in 9.2 seconds and has a maximum top speed of 310 km/h (193 mph).
The GT3 variant debuted at the 2006 Geneva Motor Show alongside the 997 Turbo. Like previous GT3 models, it is a way for Porsche to homologate aerodynamic features for racing, as well as to offer race cars for customer teams. The 997 GT3 was priced at US$106,000. The engine has the same displacement as the Turbo, but does away with the turbochargers and uses a new variable intake system. The engine is rated at 415 PS (305 kW; 409 bhp) and 405 N⋅m (299 lb⋅ft) of torque. It has an 8,400 rpm redline matching that of the Carrera GT flagship. The 3.6 L dry-sump engine does not suffer from the rear main seal problems of the earlier 3.6 L/3.8 L integrated dry-sump engines.
The GT3's body work includes a special front bumper which increases cooling for the front-mounted radiators as well as a split spoiler at the rear. The GT3 also includes a special rear bumper and center tailpipes which draw heat away from the engine. The suspension system is lowered and the car utilises 30-series 305 mm (12 in) tyres and 19 in (483 mm) wheels. The car weighs 1,395 kg (3,075 lb).
The 997 GT3 is more driver-friendly than its predecessor, with "comfort" seats and the Porsche Communication Management system installed.
The special RS model came without most of these luxuries to focus more on track-orientated driving (although the car is still road-legal). The RS trim also included a full roll cage and carbon fibre seats along with a large fixed rear wing to add to that race-car-for-the-road feel. The RS version was introduced in Europe in October 2006; the North American release was in March 2007. A racing version of the GT3 RS debuted in 2007, and it was called the 997 GT3 RSR.
The ratios on the six-speed transmission are closer, allowing the GT3 to reach 97 km/h (60 mph) in 4.1 seconds, while the RS accomplishes the same in exactly 4 seconds. The GT3 will continue to 161 km/h (100 mph) in 9.2 seconds and has a maximum top speed of 310 km/h (193 mph).
Porsche 997