PORSCHE 911 GT3 (997.1)
Performance upgrades for the 997.1 GT3
Exhaust, aero, suspension, brakes, wheels and track-focused upgrades for the 997.1 GT3.
- Engineered & tested in-house
- Track-proven performance
- Model-specific fitment guidance
- Dundon 30-day guarantee
997.1 GT3 Best Sellers
Start with your 997.1 GT3 goal
Choose the right upgrade path
Pick the goal first, then shop 997.1 GT3 parts that match how the car is actually used.
Sound
3 hand-picked products
I want sound, response, and less rear weight
Start with the exhaust path: freer flow, sharper response, retained drivability, and the right sound target for street miles or sound-restricted track days.
First mods
2 hand-picked products
I want the best first 997.1 GT3 mods
Compare the proven first steps owners usually ask about: exhaust character, aero balance, alignment support, brake confidence, and track-day setup.
Track
3 hand-picked products
I want more repeatable track sessions
Focus on the pieces that help the car stay predictable: alignment range, chassis control, brake support, wheel clearance, tire consistency, and sound compliance.
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Browse 997.1 GT3 upgrades by collection
Scan curated 997.1 GT3 upgrade collections without leaving the landing page.
997.1 GT3 Exhaust
13 products
The Porsche 997.1 GT3 is already an exceptional machine, but the right exhaust system can take it to another level. The factory setup, while well-engineered, holds back horsepower, response, and sound due to restrictive pressure dynamics and sound regulations. Dundon Motorsports’ exhaust systems remove these limitations, allowing your 4.0L flat-six to breathe freely, rev harder, and sound exactly how a GT3 should—aggressive, sharp, and race-ready.
At Dundon Motorsports, we specialize in high-performance exhaust solutions that don’t just change the sound, but increase power, improve throttle response, and reduce weight. Whether you’re looking for race-proven street headers, lightweight titanium mufflers, or precision-crafted exhaust tips, we have a solution tailored to both street and track-focused Porsche enthusiasts.
Not sure which Dundon muffler setup is right for your GT3? Read our expert guide: Which Dundon Muffler Option Is Right for Me?
🔗 Explore all 997.1 GT3 performance upgrades.
Why Upgrade Your 997.1 GT3 Exhaust?
Even though the 997.1 GT3 is an icon, its factory exhaust system leaves power on the table. Stock components are built to meet regulations rather than maximize performance. This means restricted exhaust pressure, unnecessary weight, and a quieter, less engaging sound than what the car is truly capable of.
With Dundon Motorsports exhaust systems, you’ll experience:
– More horsepower through optimized exhaust pressure and flow.
– Sharper throttle response and quicker rev matching.
– A weight reduction that enhances handling and balance.
– Multiple sound options to match your needs—from race-bred aggression to street-legal refinement.
For those needing a quieter solution to meet track sound restrictions, our new quiet tips allow you to enjoy Dundon performance without exceeding noise limits.
997.1 GT3 Exhaust Options
Street Header Lifetime Muffler Power Package – The Ultimate 997.1 GT3 Upgrade
For 997.1 GT3 owners looking for the biggest performance gains, our Street Header Lifetime Muffler Power Package is the gold standard. This race-developed system is track-tested and dyno-proven, delivering a significant increase in horsepower and torque while providing an aggressive, motorsport-inspired exhaust note.
With precision-engineered stainless steel construction, this system is designed for maximum durability and performance, making it the perfect long-term investment for your GT3.
Long Tube Street Header Exhaust System – Lightweight Power Gains
If you’re looking for a simple yet effective exhaust upgrade, our Long Tube Street Header Exhaust System is the perfect solution. By improving exhaust pressure balance and removing restrictive stock components, this system delivers real performance gains without requiring additional tuning. Designed for track and street use, this setup enhances power delivery, throttle response, and sound quality while maintaining street-legal practicality.
Titanium Mufflers – The Lightweight Upgrade
For those who want weight reduction without sacrificing performance, our Titanium Mufflers provide the best balance of power and lightweight materials. Crafted from high-grade titanium, these mufflers help shed unnecessary weight while producing a crisp, race-inspired sound. The result is a sharper, more dynamic driving experience with improved power-to-weight ratio and enhanced acceleration.
Inconel Megafon Mini Crankpipe – Maximum Sound, Maximum Performance
For track-focused drivers looking for an unmatched sound experience, our Inconel Megafon Mini Crankpipe is the answer. Built for high-performance applications, this system amplifies the raw, high-revving scream of the GT3’s flat-six while maintaining precision pressure balance for optimal power delivery
Lifetime Center Mufflers – Built to Last
For those seeking a long-term performance upgrade, our Lifetime Center Mufflers come with a lifetime guarantee. These mufflers are engineered to last the life of your GT3, ensuring consistent power gains and exhaust refinement over the years. Whether you’re using your GT3 on the track or the street, this system provides long-term durability with improved sound and response.
Exhaust Tips – Customizable Style & Sound
For those who want a personalized touch, Dundon Motorsports offers a range of exhaust tips in different designs, finishes, and sound characteristics. Whether you prefer an aggressive, race-inspired look or a refined, OEM+ style, our high-quality exhaust tips provide both aesthetics and performance.
We also offer new quiet tips for GT3 owners who need to reduce exhaust volume to comply with track regulations while keeping the signature Dundon sound and performance.
Why Choose Dundon Motorsports for Your 997.1 GT3 Exhaust?
While many exhaust manufacturers focus on sound alone, Dundon Motorsports develops exhaust systems that deliver real-world performance gains. Every system is track-tested, dyno-proven, and engineered to maximize power while maintaining reliability. Our components fit perfectly with no check engine lights or tuning issues, ensuring an easy and effective upgrade.
997.1 GT3 Aerodynamics
0 productsNo products are available in this collection yet.
The Porsche 997.1 GT3 is a masterpiece of engineering, and at Dundon Motorsports, we believe in enhancing its aerodynamic prowess to match its powerful performance. Our curated collection of aerodynamic upgrades is designed to optimize airflow, reduce drag, and improve downforce, ensuring your 997.1 GT3 slices through the air with precision and grace.
Every curve, every line, and every component is meticulously crafted to complement the iconic design of the Porsche 997.1 GT3. Whether you're aiming for faster lap times or seeking a more aggressive aesthetic, our aerodynamic solutions offer the perfect balance of form and function.
Dive deeper into the world of performance enhancements tailored exclusively for the Porsche 997.1 GT3. Explore our dedicated Porsche 997.1 GT3 collection and elevate your driving experience to new heights.
997.1 GT3 Suspension
13 products
The Porsche 997.1 GT3 is renowned for its impeccable handling and road presence. At Dundon Motorsports, we're dedicated to enhancing that legacy. Our range of suspension upgrades is meticulously engineered to provide unparalleled stability, responsiveness, and comfort, ensuring your 997.1 GT3 remains the epitome of driving excellence.
Whether you're navigating tight corners on the racetrack or cruising on open roads, our suspension solutions offer the perfect balance of rigidity and flexibility. Experience sharper handling, reduced body roll, and a ride quality that's second to none.
For those who demand nothing but the best for their Porsche 997.1 GT3, our comprehensive product collection offers a suite of performance enhancements tailored to meet the highest standards of precision and performance.997.1 GT3 Brakes And Wheels
5 products
997.1 GT3 Power Packages
2 products-
D4 Street Power Package (2007-2008 997.1 GT3/GT3RS)
From $20,315.00 $19,465.00 -
At Dundon Motorsports, we understand the passion and precision that goes into every Porsche 997.1 GT3. That's why we've dedicated ourselves to offering the finest Power Packages, meticulously engineered to elevate your driving experience. Whether navigating the open road or dominating the racetrack, our Power Packages ensure your 997.1 GT3 performs at its peak.
Our commitment to excellence extends beyond just power. We focus on harmonizing every element of your Porsche, ensuring that each upgrade complements the next. From torque enhancements to throttle responsiveness, our Power Packages are designed to impress.
Discover the full potential of your Porsche 997.1 GT3. Explore our comprehensive range of performance parts tailored exclusively for your vehicle. Dive into our dedicated Porsche 997.1 GT3 collection and find the perfect upgrade that resonates with your driving spirit.
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.
997.1 GT3 Pre-Owned
3 products
Customer Reviews
Overall rating: 5 / 5 from 446 reviews.
!Great exhaust system! Unbelievable quiet inside the car and superb sound outside. Power gains to be tested soon in track. Regards 🏁🙌🏻
Dundon Motorsports products are the pinnacle of engineering and quality. From the fit and finish, to the incredible packaging and quick shipment of products, you won't be disappointed. As far as customer support, there really is no comparison since they are the leaders in assisting their clientele achieving complete satisfaction.
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.
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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.
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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.
EXPERT FITMENT HELP
Build the 997.1 GT3 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 997.1 GT3, 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 997.1 GT3 upgrade path before committing to premium parts.
- Choosing a selection results in a full page refresh.