Your 992 GT3 is an amazing car — we just think it is lacking in the sound department. Dundon Motorsports' Cat-Back Exhaust System fixes that: no CEL, no codes, no lights, just that great Dundon Sound! Photographs are illustrative only, production parts will look...
The Valkyrie Swan Neck Wing is the foundation of our 991.1 and 991.2 GT3RS aerodynamics improvement package! Double the Downforce of the Stock 991.2 GT3RS and GT2RS Wing at 100mph. Make the air do your bidding and improve the aerodynamic performance of your GT3RS....
Add Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to...
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991.1 Turbo & Turbo S Suspension
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991.2 Turbo and Turbo S Suspension
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Turbo & Turbo S Brakes and Wheels
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Tools & Safety
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Engineered in-house
Proven where it matters.
Built for 991.1 Turbo & Turbo S owners who want measured upgrades, cleaner setup choices and confidence in the way parts work together. Exact fitment still matters: AWD hardware, brake package, suspension condition, wheel and tire choice, sound limits, emissions requirements and intended use all shape the right build.
Built in-house
In-house design and testing
Dundon parts are developed around Porsche 911 platforms as complete systems, so suspension, brake, wheel and setup choices can work together.
Measured & validated
Dyno, scan and track validation
Power, airflow, thermal behavior, clearances and repeatability are checked before a part earns a place in the catalog.
Street + track
Control without losing the Turbo
Sharper when pushed, still calm enough to drive home. That balance matters on a 991.1 Turbo & Turbo S.
Real support
Support from Porsche specialists
Guidance from people who understand 991.1 Turbo & Turbo S fitment, AWD setup tradeoffs, sound limits and real track use.
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!
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!
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.
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.
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.
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.
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
The new Dundon Ti tips are epic. Changed up the look of my car and gives it an aggressive look. The tips look “heavier”, but they are full printed Ti and extremely light. Cannot wait to see the color come in!
Build the 991.1 Turbo & Turbo S around the way you actually drive.
Not sure whether to start with suspension, brakes, wheels, setup support or a more complete track-day path? A Dundon specialist can help match the upgrade path to your 991.1 Turbo & Turbo S, trim, tracks, tire choice and goals.
Goal-based setupStreet, canyon, HPDE, time trial, sound-limited circuits or mixed-use builds.
System fitmentSuspension, brake, wheel, tire and AWD setup choices checked together.
Confidence before checkoutA clearer 991.1 Turbo & Turbo S upgrade path before committing to premium parts.
Your 992 GT3 is an amazing car — we just think it is lacking in the sound department. Dundon Motorsports' Cat-Back Exhaust System fixes that: no CEL, no codes, no lights, just that great Dundon Sound! Photographs are illustrative only, production parts will look...
The Valkyrie Swan Neck Wing is the foundation of our 991.1 and 991.2 GT3RS aerodynamics improvement package! Double the Downforce of the Stock 991.2 GT3RS and GT2RS Wing at 100mph. Make the air do your bidding and improve the aerodynamic performance of your GT3RS....
Add Power and great sound and experience your Porsche's true capabilities with the Dundon Power Package. Intentionally designed to bring big power with and distinct sound we all love, this kit is perfectly tailored to add more muscle, better sound, and increased performance to...