PORSCHE 911 GT3 RS (991.1)
Performance upgrades for the 991.1 GT3 RS
Exhaust, aero, suspension, brakes, wheels and intake upgrades for the 991.1 GT3 RS.
- Engineered & tested in-house
- Track-proven performance
- Model-specific fitment guidance
- Dundon 30-day guarantee
991.1 GT3 RS Best Sellers
Start with your 991.1 GT3 RS goal
Choose the right upgrade path
Pick the goal first, then shop 991.1 GT3 RS parts that match how the car is actually used.
Aero
3 hand-picked products
I want more aero balance and front confidence
Start with aero when the goal is better balance, stability and confidence as speed rises.
Power
3 hand-picked products
I want the classic 991.1 RS power path
Pair exhaust and intake choices around response, sound target, emissions needs and how much character you want from the 4.0L engine.
Track
3 hand-picked products
I want repeatability and setup range
Focus on damping, alignment range, brake support and tire consistency for faster, calmer track sessions.
Shop by collection
Browse 991.1 GT3 RS upgrades by collection
Scan curated 991.1 GT3 RS upgrade collections without leaving the landing page.
991.1 GT3RS Exhaust
22 products-
991.1 GT3RS Street Header, 93mm Intake Kit, Optional Lifetime Muffler Exhaust D3 Power Package
From $17,570.00 $16,715.00 -
-
-
-
Pre-Owned 991 GT3/RS Street Header Lifetime Muffler Power Package
From $13,675.50 $12,195.00 -
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
We proudly present our premier Exhaust Collection, exclusively designed for the formidable Porsche 991.1 GT3 RS. The roar of a Porsche is unmistakable, and with our exhaust systems, that roar becomes a symphony of power, passion, and precision.
With a decade of racing experience and an undying love for Porsche, we understand that the exhaust system is not just about sound; it's about optimizing performance, reducing back pressure, and enhancing throttle response. Our exhaust collection for the 991.1 GT3 RS is engineered to perfection, ensuring that each rev, each acceleration, and each drive is an exhilarating experience.
For the aficionados who wish to explore the full spectrum of performance enhancements for the Porsche 991.1 GT3 RS, our comprehensive range is available on our dedicated 991.1 GT3 RS products page.
Choose Dundon Motorsports, and let your Porsche 991.1 GT3 RS announce its presence with authority and elegance.
991.1 GT3RS Aerodynamics
10 products
Dive into our elite Aerodynamics Collection tailored exclusively for the Porsche 991.1 GT3 RS. Aerodynamics is not just about aesthetics; it's the science that bridges raw power with seamless performance, ensuring every drive is an exhilarating experience.
With a decade of racing under our belt and an unwavering passion for Porsche, we've curated a collection that embodies the essence of aerodynamic efficiency. From sleek spoilers that reduce drag to diffusers that optimize downforce, every component is designed to enhance the 991.1 GT3 RS's performance, ensuring it slices through the air with unmatched precision.
For those who seek to explore the full spectrum of upgrades for the Porsche 991.1 GT3 RS, our comprehensive range awaits you on our dedicated 991.1 GT3 RS products page.
Choose Dundon Motorsports, where every aerodynamic piece is a testament to our commitment to racing perfection and Porsche passion.
991.1 GT3RS Suspension
15 products
Welcome to Dundon Motorsports, where passion for Porsche meets unparalleled expertise. Introducing our specialized Suspension Collection for the iconic Porsche 991.1 GT3 RS. Every suspension component in this collection has been meticulously crafted to enhance the dynamic driving experience of your Porsche, ensuring precision, stability, and unparalleled performance on every curve and straightaway.
With a decade of racing heritage and in-depth knowledge of Porsche engineering, we understand the critical role that suspension plays in the overall performance and handling of the 991.1 GT3 RS. Whether you're aiming for sharper cornering, improved track times, or simply seeking the ultimate driving experience, our suspension collection offers the perfect solution.
For those who desire a holistic upgrade, our comprehensive range of performance parts tailored specifically for the Porsche 991.1 GT3 RS can be explored on our dedicated 991.1 GT3 RS products.
Trust in Dundon Motorsports, where every drive becomes a race-winning experience.
991.1 GT3RS Intakes and Tunes
3 productsPresenting our exclusive Intakes and Tunes Collection, meticulously crafted for the legendary Porsche 991.1 GT3 RS. In the realm of motorsports, the harmony between air intake and tuning is paramount, dictating both the power and the symphony of the engine.
With a rich decade of racing lineage and an unwavering commitment to Porsche excellence, we've engineered intakes and tunes that optimize airflow, enhance throttle response, and unleash the raw power of the 991.1 GT3 RS. Whether you're seeking a more aggressive intake for increased horsepower or a tune that harmonizes performance with efficiency, our collection offers the pinnacle of Porsche enhancements.
For those with an insatiable thirst for performance, our comprehensive suite of products tailored for the Porsche 991.1 GT3 RS awaits you on our dedicated 991.1 GT3 RS products page.
Choose Dundon Motorsports, and let your Porsche 991.1 GT3 RS breathe and sing like never before.
991.1 GT3RS Brakes and Wheels
10 products
Welcome to Dundon Motorsports, the heart of Porsche performance and precision. Introducing our specialized Brakes and Wheels Collection for the iconic Porsche 991.1 GT3 RS. In the world of racing, control is just as crucial as speed. Our collection ensures that your Porsche not only accelerates with power but also stops with precision and handles every curve with finesse.
With a decade of professional racing experience and a profound understanding of Porsche dynamics, we've curated a range of brakes and wheels that epitomize performance and style. From high-performance brake systems that offer unparalleled stopping power to lightweight wheels that enhance agility, every component is designed to elevate the driving experience of your 991.1 GT3 RS.
For enthusiasts who are keen to explore the full array of performance parts for the Porsche 991.1 GT3 RS, our extensive collection can be found on our dedicated 991.1 GT3 RS products page.
Choose Dundon Motorsports, where every drive is transformed into a race-winning journey.
991.1 GT3 RS Power Packages
4 products-
991.1 GT3RS Street Header, 93mm Intake Kit, Optional Lifetime Muffler Exhaust D3 Power Package
From $17,570.00 $16,715.00 -
-
-
Pre-Owned 991 GT3/RS Street Header Lifetime Muffler Power Package
From $13,675.50 $12,195.00
At Dundon Motorsports, we understand the pulse of the Porsche 991.1 GT3 RS - a machine that is a symphony of speed, power, and control. Our power packages are designed to enhance this symphony, amplifying each note to create a performance that is undeniably spectacular. Whether you’re on the track or on the road, our power packages ensure your Porsche performs at its peak, every time.
Explore a wide array of power packages, each tailored to unleash the beast within your Porsche 991.1 GT3 RS. From high-performance exhaust systems that promise a thunderous roar to power kits that boost your vehicle’s horsepower, every product in our collection is a testament to quality, durability, and unmatched performance.
Dive deeper into a world where every curve is a thrill, and every rev sends a chill down your spine. Discover a range of products designed exclusively for your Porsche 991.1 GT3 RS. Our extensive collection ensures your vehicle is not just a mode of transport but an experience, a thrill that ignites your soul every time you turn the ignition.
Experience the Dundon Difference - where every product is a promise of peak performance, ensuring your Porsche 991.1 GT3 RS isn’t just a vehicle; it’s a statement, a testament to your passion for speed, power, and precision.
Tools & Safety
16 products
Navigate through a selection of products that are not only designed to safeguard but also to empower. From robust tools that ensure your vehicle is always performing at its best, to safety gear that shields and secures, every product is crafted with the utmost precision and care.
As experts and enthusiasts in the world of motorsports, we understand that the thrill of the drive should always be in harmony with the assurance of safety and the right tools at your disposal.
From precision tools that ensure your vehicle is tuned to perfection, to safety gear that protects and enhances your driving experience, every item is a testament to our commitment to quality, safety, and performance.
As experts and enthusiasts in the world of motorsports, we understand that the thrill of the drive should always be in harmony with the assurance of safety and the right tools at your disposal.
From precision tools that ensure your vehicle is tuned to perfection, to safety gear that protects and enhances your driving experience, every item is a testament to our commitment to quality, safety, and performance.
Customer Reviews
Overall rating: 5 / 5 from 443 reviews.
The Titanium muffler and header package has taken my 3RS to a new level. I have often received comments at the track saying that my car is the best sounding car at the track.
Thank you Charles, Jamie, Ted and the crew at Dundon for taking such great care of me and your customers. You guys are a class act and have always gone above and beyond. Much appreciated! Nick
Excellent product!
Fast shipping, great product, got labor day discount applied! Gt3 can finally breathe without the particulate filter.
Everything went great with the installation
Great experience Thanks for the speedy turn around
it was very nice kit
Dundon Motorsports Suspension Setup Package for 991 Turbo/Turbo S
Excellent support and quality of parts for my 997.1 GT3 RS. The tolerances and quality of the parts are perfect
Amazing! Love the sound and the added throttle response—it’s like the GT3 just woke up and is ready to play. Absolutely transformed the driving experience. Great job, Dundon team!
Dundon never disappoints! Installation was a breeze and everything fit exactly like you would expect.
.
Allowed us to pass a 92db limit at Mont Tremblant in Canada
Allowed us to pass a 92db limit at Mont Tremblant in Canada
Perfect fit…would recommend!
Great experience. The spacer kit was exactly what we needed
Good Fitment! Thanks again.
Thank you guys! System turned out great. Sounds amazing. Tech support from Ted and Charlie was first class! They really went above and beyond! We really appreciate your partnership.
I received the Accessport device very quickly from Dundon, and found the process of uploading the ECU maps to be a simple and smooth process. I previously had OTS tunes from Softronic and Cobb, but I have to say.. what a remarkable change the custom one from Dundon has over the others. The support from both Charles and Jamie has been great. They provided useful context and slight revisions to the tune based on performance data logs that are captured by the device. The tuning is still ongoing, but I’m very pleased with the results thus far. Highly recommend!
981 GT4 Cayman, 991.1 Carrera/S, Cobb Accessport with Dundon Pro Tune
Great quality! Just print instructions and make sure to print template at 100% . 67 lb paper is perfect for template..
Amazing customer service and the most amazing sounding exhaust ever. Discovered a hole in the muffler of my GT3 and they found a replacement and had it to me the next day so we could install it for upcoming weekend HPDE. Fits perfectly and sounds so much better than the Porsche stock muffler. Can’t thank Dundon enough for their product and service backing it up.
These are the same as OEM, but much more convenient when they arrive with the exhaust so I don't have to run to the dealership and grab them.
We had a combination of the Dundon headers with the crack pipe exhaust and decided we needed a change after getting black flagged at our local track for blowing clear through the noise ordinance. Dundon's quiet muffler reduced our noise to an acceptable level and still sounds great. The quiet muffler removed any drone we had with the crack pipe and made driving the car much more reasonable. If we need to reduce sound levels more, we can easily add the quiet tips - it's nice to have modularity.
.
This is a fantastic product that saves time and makes it easy for an individual to change their wheels. The custom case is a nice added value.
Quality is great and fits like OEM!
Carbon Wind Deflectors for 992 Carrera, GT3, GT3RS and Turbo
VERY FAST SHIPPING AND NICE PRODUCT TKS AGAIN GUYS
Perfect fit and easy installation. Noticeable performance improvement on track, especially in longer straights. 3-4 mph higher speed on back straight at Sebring…and sound great.
Perfect balance of sound and performance. My car walks away from other 992 GT3s on the straights and sounds spectacular. Noticeable difference in on track performance.
Awesome
Great solution to Wind buffeting done in style
Carbon Wind Deflectors for 992 Carrera, GT3, GT3RS and Turbo
Great quality matching OEM carbon fiber
Amazing system, when the valves are closed it’s basically oem, once you open them the car screams! Used with catless headers. Greta product!
Great customer service and people who stand by their product 100%
Perfect fitment and adjustability for any occasion, track and street compatible
Fantastic product, customer service, and even packaging. Dundon is a super high quality product and I think the best in the business (I have had other systems from other companies). Easy decision for any Porsche.
992 GT3/RS Catalytic Converter Pair for Dundon Street Headers - Foundational
Step 1: Receive Package: Complete. No visible damage. Step 2: Arrange a shop to install: In Progress. Step 3: Drive it hard!: ….can’t wait!! Thanks to the Dundon team for their assistance & support to answer my questions and help tailor the kit to my needs. Looking forward to Step 3. BG
It’s been awesome so far!
10/10 would recommend. The sound is incredible from how loud it is to the tone. I wish I did this sooner.
The exhaust sounds amazing and Driver's Choice did an excellent install!
Worked as advertised. No codes with cat-less downpipes on my 992.
EXPERT FITMENT HELP
Build the 991.1 GT3 RS around the way you actually drive.
Not sure whether to start with exhaust, aero, suspension, brakes, wheels or a full track-day setup? A Dundon specialist can help match the upgrade path to your 991.1 GT3 RS, tracks, sound limits and goals.
- Goal-based setup Street, HPDE, time trial, sound-limited circuits or mixed-use builds.
- System fitment Exhaust, aero, suspension, brake, wheel and tire choices checked together.
- Confidence before checkout A clearer 991.1 GT3 RS upgrade path before committing to premium parts.
- Choosing a selection results in a full page refresh.