2004 Porsche 911

One of 27 Produced Factory-Built Competition Porsche with ALMS and International Racing History
The Porsche 911 GT3 RSR debuted in 2004 as the most advanced iteration of the Type 996-based GT3 race car, continuing a lineage of highly successful customer racing models that began with the GT3 R in 1999. Built to compete in endurance racing at the highest level, the GT3 RSR featured a 3.6-liter naturally aspirated flat-six, producing 445 horsepower at 8,250 RPM. A six-speed sequential gearbox with ignition cut enabled rapid, full-throttle gear changes while protecting drivetrain components from excessive wear. Under FIA competition specifications, the car weighed 1,100 kg (2,425 lbs), maintaining an ideal balance of power and agility.
Production was extremely limited, with 27 examples built in 2004 and an additional 10 in 2005. The model retained the teardrop-shaped headlights of the Type 996 GT3 RS but introduced aerodynamic refinements and further weight-saving measures for improved track performance.
Competition History
This particular GT3 RSR competed in the 2004 American Le Mans Series (ALMS) season, driven by Patrick Long and Cort Wagner, with Mike Rockenfeller joining for Petit Le Mans. The car entered eight ALMS rounds that year, securing the following results:
- Sebring 12 Hours  18th
- Mid-Ohio  11th
- Lime Rock Park  13th
- Infineon Grand Prix of Sonoma  12th
- Portland Grand Prix  11th
- Mosport  12th
- Road America  10th
- Petit Le Mans (Road Atlanta)  14th
- 4 Hours of Laguna Seca  12th

In 2005, the car continued in ALMS under the driving team of Michael Cawley (USA), Marc Sluszny (Belgium), and Tracy Krohn (USA), finishing 16th in the 12 Hours of Sebring. The season also included participation in the Internationales ADAC endurance series, racing at:
- 1000 km of Monza  DNF (Spin)
- 1000 km of Silverstone  DNF (Gearbox)
- 1000 km of Nürburgring  26th

Evolution of the GT3 Racing Platform
The 911 GT3 RSR built upon the success of its predecessorsthe GT3 R (1999) and GT3 RS (2001)which had established Porsches dominance in GT endurance racing. The GT3 RSR continued that success, securing class victories across multiple championships and endurance races. It remained a competitive entry in global motorsport until it was replaced by the Type 997 GT3 RSR in 2007.
With a well-documented racing history and status as one of just 27 examples built in 2004, this GT3 RSR represents a significant chapter in Porsches motorsport legacy.