Porsche 911 GT3 RS 991 – Motorsport Without Compromise
The Porsche 911 GT3 RS (991) is where road car engineering meets motorsport obsession. With its wider track, carbon fiber panels, magnesium roof, and naturally aspirated flat-six screaming to 9000 rpm, the RS takes everything that defines the GT3 and turns the intensity up another notch. It is lighter, sharper, and engineered for maximum downforce and cornering grip. For drivers who live for apex speed and track-day precision, the GT3 RS stands as a benchmark.
At ATOMIC-SHOP, we support this legend with a catalog of parts that elevate its performance even further: headers and exhaust manifolds, cat-back exhausts, race-compound brakes, FIA racing seats, radiators, harnesses, suspension kits, and intake upgrades. Each product is selected to withstand the brutal demands of the RS while sharpening its motorsport pedigree.
Air Intake Systems – Feeding the High-Revving Flat-Six
The RS engine thrives on unrestricted airflow. Our performance intake systems and high-flow filters reduce restriction and stabilize air charge temperatures. For a car that lives above 7000 rpm, maintaining clean, dense airflow ensures not only higher peak power but also durability across a full day on track.
- High-flow filters – improved breathing without sacrificing protection.
- Cold-air intake designs – minimize heat soak in high ambient conditions.
- Manifold upgrades – optimized plenum volume and runner flow for tuned applications.
Even a marginal airflow improvement at high rpm compounds into lap-time consistency—a hallmark of the GT3 RS character.
Exhaust Manifolds, Downpipes & Cat-Back Systems
The RS demands efficiency in every cycle. Our headers/exhaust manifolds are engineered with tuned primary lengths for superior scavenging. Combine them with sport downpipes, high-flow catalysts, and cat-back systems to unlock horsepower and give the RS an even more aggressive voice.
- Headers/Manifolds: race-inspired collector designs for high-rpm flow.
- Downpipes & catalysts: reduce backpressure while controlling emissions.
- Cat-back exhausts: titanium and stainless options for reduced mass and sharper tone.
- Accessories: clamps, valve modules, and thermal shielding for reliable installs.
Weight savings and a more urgent exhaust note transform every drive, whether on a mountain road or during flat-out Nürburgring laps.
Braking Systems – Total Confidence at the Limit
The 991 GT3 RS accelerates like a race car, but its true measure is braking. ATOMIC-SHOP supplies brake pads, rotors, and braided lines to deliver repeatable, fade-resistant performance session after session.
- Brake pads: motorsport compounds tuned for endurance or sprint formats.
- Brake rotors: lightweight designs with directional vanes for rapid heat dissipation.
- Brake lines: stainless braided construction for precise pedal feel.
These upgrades allow later braking, sharper modulation, and consistency—exactly what the RS chassis demands.
Suspension Kits & Air Springs – Precision Handling
The GT3 RS chassis was born for apex hunting. Still, aftermarket coilovers, suspension kits, and air spring systems give drivers the ability to fine-tune geometry and damping for different circuits or road conditions. Stiffer bracing and optimized damping deliver even more precision at turn-in and stability through high-speed sweepers.
- Adjustable coilovers: multiple damping modes for track or road setups.
- Suspension kits: lowering and stiffness options for maximum control.
- Air spring systems: maintain clearance for street driving while enabling track-ready stance.
With the right setup, the RS becomes even more communicative—letting you push harder while maintaining composure.
Seats, Harnesses & FIA-Approved Safety
In a car as extreme as the GT3 RS, the cockpit must be as focused as the drivetrain. We offer FIA-approved racing seats, sport seats, and 4- and 6-point harnesses, along with seat brackets and accessories for secure, plug-and-play installation.
- Racing seats: lightweight shells with optimal lateral containment.
- Harnesses: HANS-compatible, FIA-approved, and race-proven.
- Brackets & hardware: engineered for safety, durability, and OEM sensor integration.
These upgrades ensure drivers are locked in place, reducing fatigue and sharpening control during long stints.
Cooling Systems & Reliability Upgrades
Track driving pushes every component to its limits. Our radiators, oil coolers, and accessories improve thermal stability, while premium oils & fluids protect bearings, seals, and transmission hardware under sustained stress.
- Radiators: improved core density and airflow management for cooler operation.
- Oil systems: protect the engine during extended high-rpm runs.
- Transmission cooling: stable shifts lap after lap.
Protecting reliability ensures the RS can deliver full performance from the first lap to the last.
Clutch Kits & Driveline Hardware
The RS driveline is robust, but motorsport applications demand consistency. Our clutch kits and supporting hardware are built to withstand high heat and torque loads while preserving sharp engagement. Pair with the correct oils & fluids for the longest possible service life under aggressive use.
Aerodynamics & Diffusers – Stability in Every Corner
Downforce is central to the RS philosophy. Our diffusers and aero accessories optimize airflow under the car and at the rear, adding grip and stability. Combined with factory wings, these parts make the RS more planted at high speed.
- Rear diffusers: reduce turbulence, increase stability under braking.
- Aero trims: lightweight carbon pieces to sharpen appearance and function.
- Heat-resistant designs: withstand exhaust and track temperatures.
COBB & Electronics – Data as a Performance Tool
Electronics and data logging help monitor vital signs. COBB systems provide calibration, logging, and analysis tools to validate setups and improve repeatability. Combined with cooling and fueling data, this ensures hardware upgrades deliver measurable performance.
Why Choose ATOMIC-SHOP for Your GT3 RS 991?
Because a car like the 991 GT3 RS deserves motorsport-grade components. At ATOMIC-SHOP we stock headers, exhausts, brakes, FIA safety gear, suspension, cooling, and intake upgrades from world-class brands. With expert support, fast EU shipping, and verified fitment, we help you build an RS that’s even more thrilling and more reliable.
- Comprehensive catalog from exhausts to suspension.
- Parts tested and proven in motorsport conditions.
- Expert guidance and technical support.
- Fast EU-wide delivery.
Porsche 911 GT3 RS 991 – Pushing Limits, Preserving Purity
The 991 GT3 RS is already one of Porsche’s most visceral creations. With carefully chosen upgrades—intakes, exhausts, brakes, cooling, and FIA safety gear—it becomes sharper, stronger, and more resilient. At ATOMIC-SHOP, we give enthusiasts the tools to unlock its ultimate potential while staying true to the RS ethos: motorsport without compromise.