The 520-HP Naturally Aspirated Track Weapon
The Porsche Motorsport department in Weissach has revealed its latest track-honed evolution of the 911: the new 911 GT3 RS. Following in the revered tradition of Rennsport derivatives, the new coupe brings motorsport hardware directly to road-legal asphalt, pairing an aggressively revised aerodynamic package with a high-revving, naturally aspirated 4.0-litre flat-six engine. Based on the 911 GT3, this latest RS raises Weissach’s engineering benchmark, coaxing 520 hp (383 kW) from its rear-mounted engine and pairing that output with a chassis calibrated for sheer tactile response.
Every generation of the 911 GT3 RS exists for a singular objective: extracting the absolute maximum circuit performance from a production silhouette without diluting the raw mechanical feedback that links car and driver. In the 991.2 generation GT3 RS, that mandate manifests in uncompromising mechanical refinements. Rather than resorting to forced induction, Porsche has preserved the high-revving soul of its naturally aspirated boxer engine, raising peak engine speed to an astounding 9,000 rpm while redesigning key elements of the chassis kinematics, aero surfaces, and lightweight cabin structure to dominate track days straight off the showroom floor.
High-Revving Naturally Aspirated Heart
At the center of the 911 GT3 RS driving experience lies its 4.0-litre horizontally opposed six-cylinder power unit. In an era where competing performance coupes increasingly rely on turbochargers, Weissach’s motorsport specialists remained dedicated to the immediate throttle pick-up and acoustic drama of natural aspiration. The 4.0-litre engine delivers 520 hp (383 kW) at 8,250 rpm along with 470 Nm (346 lb-ft) of torque at 6,000 rpm. This represents an increase of 20 hp (15 kW) and 10 Nm over both the previous 991.1 GT3 RS and the contemporary 991.2 GT3.
Reaching that 520-hp threshold required painstaking internal work derived directly from Porsche’s GT race cars. The engine breathes through a variable resonance intake system with two switchable flaps, allowing clean cylinder charging across the entire band from idle to the 9,000-rpm rev ceiling. Solid valve lifters via rigid valvetrain arms replace hydraulic lifters to guarantee valvetrain stability at extreme engine speeds, while a central oil feeder system supplies lubricant directly to the crankshaft bearings under violent lateral loads.
Power is fed exclusively to the rear wheels through a specially calibrated seven-speed Porsche Doppelkupplung (PDK) dual-clutch transmission. There is no manual option offered for the RS—every millisecond on track matters. The transmission’s control unit has been programmed with aggressive, instantaneous shift maps designed to keep the boxer engine squarely inside its powerband. Short gear ratios ensure relentless thrust: zero to 62 mph (100 km/h) takes just 3.2 seconds, 0 to 124 mph (200 km/h) is dispatched in 10.6 seconds, and top track speed climbs to 193 mph (312 km/h).
Aerodynamics Dictated by Downforce
Visual aggression on the 911 GT3 RS is never an aesthetic afterthought; every intake, strake, and vent serves an explicit aerodynamic purpose. The wide, muscular body, borrowed from the 911 Turbo and adapted for circuit duty, is sculpted to manipulate airflow across high-speed bends. Most prominent is the imposing rigid rear wing fixed atop lightweight aluminum uprights. Manually adjustable to various angle-of-attack settings, the rear airfoil works in concert with an expansive underbody diffuser and front splitter to generate serious usable downforce without incurring excessive high-speed drag penalties.
At 124 mph (200 km/h), the aerodynamic revisions generate over twice the downforce produced by the standard 911 GT3. A signature feature of the 991.2 RS is the pair of NACA ducts integrated cleanly into the carbon-fiber bonnet. These air scoops funnel cooling air directly to the front brake calipers and discs without disturbing the exterior airflow across the front end, simultaneously improving braking thermal endurance during relentless lapping sessions. Front wheel arch air louvers relieve high pressure built up by rotating wheels, keeping the front axle firmly planted through fast turn-in phases.
Motorsport Chassis and Ball-Joint Suspension
Underneath the carbon-composite exterior bodywork, the suspension setup introduces pure racing hardware to standard production sports cars. To eliminate unwanted deflection and elastic play under heavy braking and high lateral G-forces, Porsche engineers replaced traditional rubber elasto-kinematic bushings on all suspension arms with solid uniball ball joints. This rigid metallic connection between chassis and wheel carriers delivers unfiltered steering communication, ensuring that minute surface undulations and front-tire slip angles transmit directly to the rim of the Alcantara steering wheel.
Spring rates have been significantly stiffened compared to the prior model, while the Porsche Active Suspension Management (PASM) adaptive damper system has been reprogrammed with distinct Normal and Sport damping curves specifically matched to high downforce loads. Complementing the rigid mechanical setup is a recalibrated rear-axle steering system. By turning the rear wheels counter to the front wheels at low speeds and in phase at high speeds, the electronic system delivers lightning-fast turn-in agility through chicanes combined with rock-solid stability in triple-digit sweepers.
Mechanical traction is further governed by a wide, staggered wheel and tire package. Forged lightweight alloy wheels measure 20 inches in diameter at the front and 21 inches at the rear, wrapped in newly developed ultra-high-performance rubber—265/35 ZR 20 up front and massive 325/30 ZR 21 at the back. The widened contact patches ensure the rear tires can translate all 520 horsepower into explosive forward acceleration on corner exit.
Lightweight Cabin and Dedicated Clubsport Equipment
Stepping inside the cockpit makes Weissach’s weight-saving discipline immediately obvious. To strip mass from above the vehicle’s roll center and across the perimeter, the interior omits traditional luxury equipment in favor of minimalist race-grade hardware. Traditional interior door handles are discarded in favor of lightweight red textile pull loops. The lower door cards shed storage bins for lightweight nets, sound-deadening insulation is drastically stripped back, and an ultra-lightweight rear engine cover replaces heavier carpeting and shielding.
Driver and passenger sit in deeply contoured full bucket seats formed from carbon-fiber-reinforced plastic (CFRP) with exposed carbon-weave backing, upholstered in black leather with perforated Alcantara center sections to provide unwavering lateral restraint under punishing G-forces. For track day participants, Porsche provides the traditional Clubsport Package as a no-cost option. This track-ready bundle bolts a sturdy steel roll-over bar behind the seats, alongside a manual fire extinguisher, prep wiring for a main battery disconnect switch, and a six-point harness for the driver’s seat.
The Weissach Package: Pushing Weight Reduction Farther
For purists seeking the most extreme mechanical specification, Porsche Motorsport developed the optional Weissach Package. Named in tribute to the company’s legendary development testing ground, this option extends carbon-fiber construction deep into the car’s structural and running gear. The roof panel, front lid, and rear wing are rendered in bare carbon-weave finish, while carbon fiber replaces steel and aluminum for the front and rear anti-roll bars, coupling rods, and interior trim accents.
When ordered in combination with the optional forged magnesium wheels, the Weissach Package trims approximately 18 kg of unsprung and rotating mass from the chassis, dropping overall vehicle kerb weight to just 1,430 kg. That reduction directly benefits directional change agility, braking distances, and suspension compliance over circuit curbing. Porsche also invites buyers to explore the breadth of their car’s capabilities and sharpen track techniques through dedicated driving programs hosted at Porsche Experience Centres across the globe.
Vehicle data
| Make | Porsche |
| Model | 911 GT3 RS |
| Generation / chassis code | 991.2 |
| Model year(s) covered | 2018–2019 |
| Body style | 2-door coupe |
| Powertrain / engine | 4.0-litre naturally aspirated flat-six (boxer) |
| Power / torque | 520 hp (383 kW) @ 8,250 rpm / 470 Nm (346 lb-ft) @ 6,000 rpm |
| Transmission | 7-speed Porsche Doppelkupplung (PDK) dual-clutch |
| Drivetrain | Rear-wheel drive |
| Key performance figures | 0-62 mph (100 km/h) in 3.2 s, top speed 193 mph (312 km/h), 9,000 rpm rev limit |
| Price (as stated) | Not stated in sources |
| On-sale / announcement period | March 2018 (Geneva Motor Show debut) |
| Market | Global |