The Porsche 991 GT3 Cup is a highly successful, purpose-built racing car based on the 991 generation of the Porsche 911.1 It was the designated vehicle for Porsche’s one-make racing series, including the prestigious Porsche Mobil 1 Supercup (which supports Formula 1 races) and the various national Porsche Carrera Cup championships around the world.
As a “Cup” car, it is a non-road-legal, track-only vehicle sold directly by Porsche Motorsport to customer racing teams. The 991 generation was produced in two distinct versions.
1. Porsche 991.1 GT3 Cup (2013–2016)
This was the first version, based on the 991.1 GT3 road car. It introduced a new chassis and, for the first time in a Porsche Cup car, a sequential gearbox operated by paddle shifters, replacing the traditional sequential stick shift of its 997 predecessor.
- Engine: 3.8-liter naturally aspirated flat-six (Boxer)
- Power: Approximately 460 hp at 7,500 rpm
- Transmission: 6-speed sequential dog-type gearbox with pneumatic paddle shifters
- Weight: Approximately 1,175 kg
- Key Features:
- Lightweight aluminum-steel composite bodyshell with a welded-in FIA-certified roll cage.
- Stripped-out interior with a single racing bucket seat, six-point harness, and Cosworth digital display.
- Race-tuned suspension (McPherson front, multi-link rear) with adjustable height, camber, and toe.
- 380 mm steel brake discs (six-piston front, four-piston rear) with no ABS or traction control.
- A prominent rear wing for downforce.
2. Porsche 991.2 GT3 Cup (2017–2020)
In 2017, the Cup car was updated to reflect the new 991.2 generation GT3. This update brought a significant engine upgrade and refined aerodynamics.
- Engine: 4.0-liter naturally aspirated flat-six with direct fuel injection
- Power: Approximately 485 hp at 7,500 rpm
- Transmission: 6-speed sequential dog-type gearbox with paddle shifters
- Weight: Approximately 1,200 kg
- Key Features (Updates from 991.1):
- New Engine: The larger 4.0L engine provided more power and torque, as well as improved durability.
- Revised Aerodynamics: A new front apron and rear end were designed for increased downforce and aerodynamic efficiency.
- Enhanced Safety: An enlarged roof-mounted escape hatch was added to meet the latest FIA safety standards.
- Improved Durability: Components like the drive shafts were strengthened to handle the increased power.
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