PORSCHE 911 GT3 (992.2)

Performance upgrades for the 992.2 GT3

Exhaust, aero, suspension, brakes, wheels and track-focused upgrades for the refreshed 992.2 GT3.
  • Engineered & tested in-house
  • Track-proven performance
  • Model-specific fitment guidance
  • Dundon 30-day guarantee

Start with your 992.2 GT3 goal

Choose the right upgrade path

Pick the goal first, then shop the parts that match how the car is actually used.

Sound 2 hand-picked products

I want sound, response, and less rear weight

Start with the exhaust path: freer flow, retained drivability, and the right sound target for street miles or sound-restricted track days.

Shop by collection

Browse 992.2 GT3 upgrades by collection

Scan exhaust, aero, suspension, brake, wheel, safety, and pre-owned options without leaving the landing page.

Confirm exact fitment before ordering

992.2 GT3 Exhaust

12 products

Engineered in-house

Proven where it matters.

Built for owners who want measured gains, cleaner setup choices, and confidence in the way the parts work together. For the refreshed GT3, exact fitment still matters: transmission, brake package, front axle lift, Weissach equipment, wheels, tires and local sound or emissions rules all shape the right build.

In-house design and testing

Built in-house

In-house design and testing

Dundon parts are developed around the car as a system, so exhaust, aero, suspension and brake choices can work together.

Dyno, CFD & track validation

Measured & validated

Dyno, CFD & track validation

Power, airflow, thermal behavior and repeatability are checked before a part earns a place in the catalog.

Street manners, track intent

Street + track

Street manners, track intent

Sharper when pushed, calm enough to drive home. That balance matters on a 9,000 rpm GT3.

Support from real Porsche specialists

Real support

Support from real Porsche specialists

Guidance from people who understand 992-generation fitment, setup tradeoffs, sound limits and real track use.

VIDEO PROOF

GT3 proof videos

992 GT3 exhaust dyno proof: stock vs Dundon

992 GT3 aero and suspension proof at Nurburgring

Dundon GT3 exhaust sound proof

Customer Reviews

Overall rating: 5 / 5 from 438 reviews.

Excellent support and quality of parts for my 997.1 GT3 RS. The tolerances and quality of the parts are perfect

996 997 Rear UCA Dog Bone SET

Customer photo review of 718 GT4RS Street Header Package

Dundon never disappoints! Installation was a breeze and everything fit exactly like you would expect.

718 GT4RS Street Header Package

Allowed us to pass a 92db limit at Mont Tremblant in Canada

Nurburgring Quiet Tips

Allowed us to pass a 92db limit at Mont Tremblant in Canada

Nurburgring Quiet Tips

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.

992 Valve Set Retrofit Rev0

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

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.

Pre-Owned 991 GT3/RS Lifetime Center Muffler

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.

992 Muffler Strap Pair with Bolts

Customer photo review of Dundon Lifetime Quiet Muffler (no hardware or tips)

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.

Dundon Lifetime Quiet Muffler (no hardware or tips)

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.

992 Valve Set Retrofit Rev0

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.

Titanium Ultralight GT3/RS Muffler

Amazing system, when the valves are closed it’s basically oem, once you open them the car screams! Used with catless headers. Greta product!

OBD Killer

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

MCS 3-Way Suspension Package for 981/718 GT4

Worked as advertised. No codes with cat-less downpipes on my 992.

OBD Killer

Customer photo review of 992 GT3/RS Titanium Vented Tips

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!

992 GT3/RS Titanium Vented Tips

Incredible sound. I installed a full Dundon system on a 992.1 GT3 Touring. - 992 GT3 Street Header Complete Exhaust Package (non-EU) - Titanium Ultralight Muffler - Loud - Loud Inserts for Dundon Titanium GT3/RS Muffler - Vented Tip option Sounds normal stock until it doesn't... Cold start won't wake the neighbors but as soon as I put it in sport mode, things change. Also in normal mode if I go above three or 4000 RPMs the valves open up and all hell breaks loose but in a good way. Higher pitch Sound no drowning very solid no regrets. Take that card to 6 to 9000 and we have problems in a good way. I was concerned about putting the loud inserts in but after talking to the guys over there, they said they have not had one client take them out after they received the install. Glad I have them. It's not too loud and it's got a great pitch to it.

Titanium Ultralight GT3/RS Muffler

EXPERT FITMENT HELP

Build the 992.2 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 car, 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 992.2 GT3 upgrade path before committing to premium parts.

Support

Frequently Asked Questions

1

Will Modifying the Exhaust on my 992.1 GT3 car void my warranty?

No. We have a number of Porsche Dealerships in the USA and Canada that purchase exhausts from us, and in almost 10 years, there have been no issues with Warranty coverage.

2

What are Dundon Headers made from?

Dundon Headers are made from 321 stainless steel.  This was chosen for its better high-temperature corrosion resistance (yes, 304 rusts from the inside out in exhaust applications). 321 provides superior fitment due to less stress in the material during welding from 321’s greater high temperature performance.

3

Do Dundon 992 Street Headers include Valves and Catalysts?

Yes!  Dundon Street Headers come complete with Valves and Catalysts included in the price, as well as all hardware and gaskets you need (you reuse the stock exhaust manifold gaskets).  Be sure when comparing to other companies products that you include headers, valves and catalysts in the comparison for pricing…

4

What are your Mufflers made from?

Dundon uses 3 different materials for rear mufflers.  

Lifetime Mufflers use 321 Stainless steel. 

Mini Cracks and Crack Pipes use Inconel for light weight and thin wall specs.

Ultralight Ti Mufflers are carefully designed and constructed of Titanium for lightweight and higher pitched sound.  Our Titanium mufflers have a fully  internally reinforced design, with careful attention paid to fabricating without oxidizing the Titanium.  (colors are oxidation, yes rainbows are pretty, but you don’t want to see rainbow welds on your exhaust!).

5

Do Dundon 992 Street Header exhaust packages drone?

If you want Drone free cruising, you need a muffler.  Drone comes from a frequency in the exhaust that excites the air in the cabin of the car to resonate (think of a speaker box).  If you want to avoid drone you need to change the frequency, this is why we keep valves on our exhausts, as the way you change the frequency is to push the exhaust through a smaller, longer tube (like a pipe organ) so that you move the frequency away from the resonant frequency.

Mini Crack pipes drone a bit

Full Crack Pipes Drone a lot.

6

What exhaust system is best for me?

You first have to ask how you will use the car:  Only used on Track with no sound restrictions?  Taking Grandma to Brunch?  Live in a Condo with many “Karen’s”  Choose to ensure you can live with it.  

Street Headers are the basis of all of our exhaust choices, from there you need to decide what muffler you want to run

Lifetime Loud Muffler:  Great scream with a little more bass at idle

Inconel Mini Crack:  More volume, some drone and an RSR race car scream at high RPM

Ultralight Titanium Muffler:  Great Scream, Higher pitch (or lack of low frequencies)

Add Loud Inserts for Mini crack level of loud but still with no drone during cruise.

7

Do You Make Quiet Tips to meet sound restricted Track dB requirements?

If you need to pass sound at your local tracks, we offer quiet tips for occasional use that offer 7-8dB sound reduction.

8

How do Dundon Headers Make Power?

Pressure Waves and harnessing the strength and timing of the waves as they go down the tube, expand and reflect back to the head.  “Flow” and “Backpressure” are words used by people who don’t know what they’re doing

9

Do Dundon Intakes for 992 GT3 Make Power?

Yes and lots of it!  Please check the individual kits for specifics, but some combinations make as much as 70+whp!

10

Do you sell replacement filters for your intakes?

Yes we do! 

11

Will Dundon 3-way dampers hurt the quality of my 992 ride on the street?

Not at all, in fact your street ride will improve with the Dundon-specific valving used in our custom MCS 3-way kits. Supple, supported and more grip!

12

I drive my 992 GT3 on the street and on the track, should I have a track alignment or a street alignment?

The tires wear significantly more at the track than they do on the street.  This is why we generally will recommend a track alignment for most cars that are tracked (this also covers mountain carving cars).  Unless you’re commuting 1000’s of miles between track days then you will have more wear from the track than you will from the street.

13

Will Dundon suspension arms make my 992 gt3 loud and clunky like a cup car?

No way!  There will be a little bit more noise when you remove the rubber from your suspension, but it won’t make the car loud and clunky.