Dundon Motorsports 992.1 GT3

LABOR DAY SALE · SEPTEMBER 1–7

UNLEASH YOUR PORSCHE’S TRUE POTENTIAL.

Seven days on the parts your Dundon Build still needs. Pick your Porsche and see what is on sale for it.

Up to 15% off for Dundon Builds.

SHOP THE SALE PLAN MY BUILD

September 1–7 only. Free ground shipping on eligible orders over $2,000. Aerodynamics, brakes and wheels are excluded.

  • Engineered and tested in-house
  • Track-proven performance
  • Model-specific guidance
  • Dundon 30-day guarantee

SEPTEMBER 1–7 ONLY

THE LABOR DAY OFFERS

  • Dundon adjustable sway bar end links for the 992 GT3 RS 15% OFF

    Suspension Packages & Intakes

    Suspension Setup Packages and intake kits, at the deepest discount in the sale.

    SHOP SUSPENSION & INTAKES
  • A Porsche 992 GT3 RS being 3D scanned at Dundon Motorsports UP TO 15% OFF

    Dundon Builds

    A build can start with one system. Spec yours and see what it comes to.

    BUILD YOURS
  • Two Dundon-built Porsche 911 GT3 RS in the Dundon Motorsports shop 10% OFF

    Continue an Existing Build

    Already own Dundon parts? Exhaust systems and complete exhaust packages are 10% off.

    CONTINUE MY BUILD
  • Dundon Valkyrie carbon swan neck wing on a 992 GT3 10% OFF

    Selected Aerodynamics

    Wings, splitters, dive planes and gurney flaps — CFD-designed and track-tested.

    SHOP AERODYNAMICS

Free ground shipping on eligible orders over $2,000. Aerodynamics, brakes and wheels are excluded from free shipping. Offers cannot be combined with each other.

THE DUNDON BUILD

WHAT IS A DUNDON BUILD?

A Dundon Build can start with one system. It is the right Dundon product — or combination of products — selected for the customer’s chassis, driving style, and goals.

FIND PARTS FOR MY CAR Plan a build with us →
A Porsche 992 GT3 strapped to the Dundon Motorsports dyno with Dundon Street Headers fitted.

Hear it

  • Titanium Ultralight Muffler Valves closed
  • Titanium Ultralight Muffler Valves open

SHOP THE SALE

WHAT IS ON SALE FOR YOUR PORSCHE.

Almost every part in this sale is built for a specific car. Pick yours, then choose a category.

All cars 992.2 GT3 911 GT3 911 GT3 RS 911 Carrera 911 Turbo Boxster / Cayman 718 GT4 RS / Spyder RS 911 Cup

127 parts on sale across every category

15% off Suspension Setup Packages and Intakes.

10% off Dundon Exhaust Systems and complete exhaust packages.

10% off select Dundon Aerodynamics.

BUILD CALCULATOR · 992.1 GT3 EXAMPLE

SPEC YOUR CAR (992.1 GT3 Example)

One example car, live. Toggle the components you own or want on this 992.1 GT3, mark what is already fitted, and watch what the build gains. We hold model-specific specs for the full range — every GT3 and GT4, Turbo, Carrera, Boxster and Cayman — and will spec the same build for your Porsche.

Power & Exhaust
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Exhaust Sound 6
  • Loud Muffler Valves closed
  • Loud Muffler Valves open
  • Titanium Ultralight Muffler Valves closed
  • Titanium Ultralight Muffler Valves open
  • Inconel Mini Crack Pipe Valves closed
  • Inconel Mini Crack Pipe Valves open

Technical Proof

Dundon Exhaust Review

A customer runs through the exhaust on his 991.2 GT3: more power, better sound, still daily drivable with no check-engine light.

Suspension Setup Package
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Technical Proof

Nürburgring in a 992 GT3 on Dundon aero and suspension

A 992 GT3 lapping the Nordschleife on the Dundon aero and suspension setup, with driver notes on speed and stability.

Dampers

Technical Proof

Two Lab Rats against a 992 GT3 RS

A 991.2 GT3 RS and a 718 GT4 RS running the full Dundon suspension package, driven back to back by two pro drivers.

Aerodynamics
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Technical Proof

Dundon Lab Rat vs Manthey GT4 RS

A controlled back-to-back track test at The Ridge against the Manthey setup, run on the same day with the same drivers.

Wheels
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Brakes
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992.1 GT3 992.1 GT3

Orange badge = adding · outlined badge = already on the car

YOUR BUILD

+0 whp gain
0 components

Stock 992.1 GT3 on our dyno: 448 whp

  • Select components to see what the build gains.

TALK TO THE TEAM ABOUT THIS BUILD

Shown as an example on the 992.1 GT3. Numbers are combined gains for the selected components, measured on our development cars. Ask the team for the right combination for your model — every build is confirmed before ordering.

SUCCESS STORIES

REAL CARS. REAL DRIVERS. REAL RESULTS.

See how Dundon customers use complete systems, staged builds, and individual upgrades on the road and at the track.

Build Walkaround 992.2 GT3

Does the 992.2 GT3 Need an Aftermarket Exhaust?

Does the 992.2 GT3 really need an aftermarket exhaust or is the stock system “good enough”? This dyno test might change your mind.

Track Proof 992 GT3 RS Power and Sound

Porsche 992 GT3 RS feat. 300+km/h DYNO Pulls!

FULL Dundon Megaphone Inconel exhaust sounds AMAZING | 300+km/h DYNO Pulls!

Customer Review 992.1 GT3 Power and Sound

992 GT3 Best Exhaust Setup Yet + Compound Lap Record Attempt!

The first time lapping the compound with a GT3 - and the results are surprising! Love the new Titanium Ultralight muffler from Dundon!

Track Proof 992 GT3 Aero and Suspension

Nürburgring in a 992 GT3! Dundon Aero/Suspension

Marcel Fässler noted a significant boost in speed and improved aerodynamics, attributing it to our top-tier upgrades. In addition, he and the Sportec AG pointed out the excellent quality of the suspension, which helps make the car more planted over the fast, bumpy sections on the Nürburgring.

Track Proof 991.2 GT3RS & 718 GT4RS

Can Dundon Make a 991.2 GT3RS & 718 GT4RS as fast as a 992 GT3RS?

Two pro drivers putting the new 3RS, Dundon's GT4RS and 991.2 GT3RS LabRats (Equipped with full Dundon performance upgrades) through their paces

Customer Review 991.2 GT3 More Power

Dundon Exhaust Review

You get more power, and the car sounds better, still daily drivable, no CEL

Track Proof GT4 RS Complete Lab Rat

Dundon Lab Rat vs Manthey GT4 RS: Real Track Test 

Can an American manufacturer build a faster GT4 RS than the “gold standard” Manthey setup? We brought both cars to The Ridge Motorsports Park (Shelton, WA) and ran a same‑day, controlled head‑to‑head—so the comparison stays honest.This wasn’t a Nürburgring marketing lap. So we did the test where we can control the variables, keep conditions consistent, and actually learn something useful.

Track Proof 718 GT4 RS

Dundon GT4 RS Lab Rat TRACK SETUP | Dundon goes to COTA

At the end of the weekend, all 3 drivers ended up with a setup that was really close to the recommended setup that we provide which really goes to show what a great setup that is and how it can work for different styles of driving.

Individual results depend on the car, its specification, setup, conditions and driver.

Customer Reviews

Overall rating: 5 / 5 from 434 reviews.

Customer photo review of 718 GT4RS Street Header Package

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

Ryan R. 5/5 Verified

718 GT4RS Street Header Package

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

John P. 5/5 Verified

Nurburgring Quiet Tips

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

John P. 5/5 Verified

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.

Kyle P. 5/5 Verified

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!

Stephen N. 5/5 Verified

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.

Marc D. 5/5 Verified

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.

Stephen Q. 5/5 Verified

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.

Stephen Q. 5/5 Verified

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.

George K. 5/5 Verified

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.

George K. 5/5 Verified

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!

Salman A. 5/5 Verified

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

Blair G. 5/5 Verified

MCS 3-Way Suspension Package for 981/718 GT4

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

Christian K. 5/5 Verified

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!

Josh G. 5/5 Verified

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.

Richard A. 5/5 Verified

Titanium Ultralight GT3/RS Muffler

PLAN OR CONTINUE YOUR DUNDON BUILD

PLAN OR CONTINUE YOUR DUNDON BUILD

Tell us what you drive, which Dundon parts you already own, and what you want to improve. We will help identify the right next step.

  1. Tell us what you already have.

  2. Tell us what you want to improve.

  3. Receive the right next-step recommendation and an eligible order.

Our team will review your request and respond as quickly as possible during business hours.

SEND A BUILD REQUEST BOOK A CALL MESSAGE US ON WHATSAPP

Send a build request

QUESTIONS

LABOR DAY SALE FAQ

What is a Dundon Build?

A Dundon Build can start with one system. It is the right Dundon product — or combination of products — selected for the customer’s chassis, driving style, and goals.

Is every Dundon Build a Lab Rat?

No. Lab Rat is the most complete expression of the Dundon Build philosophy. Many customers start with one system and continue the build over time.

Can I build my car in stages?

Yes. Dundon can help identify the right order for suspension, aerodynamics, power, exhaust, braking, and other upgrades.

How do I know which components are right for my car?

Use the build calculator to see what each stage changes, then send us your car and goals. We confirm fitment and the right order before anything is ordered.

Are discounts automatic?

Eligible public sale pricing is applied according to the active promotion. Continue Your Dundon Build orders are confirmed and prepared by the Dundon team.

How do the Labor Day offers work?

Up to 15% off for Dundon Builds. Within that: Suspension Setup Packages and Intakes are 15% off; Dundon Exhaust Systems and complete exhaust packages are 10% off; select Dundon Aerodynamics are 10% off. The same pricing applies whether you are starting a build or adding the next part to one.

Offers cannot be combined with each other, and complete Lab Rat packages are not part of this sale.

When does the sale end?

The Labor Day Sale ends September 7, 2026, at 11:59 PM Pacific Time.

Offer details. Selected products only. Complete Lab Rat packages are excluded from this sale. No retroactive discounts. No gift cards. No Pre-Owned products. No already-discounted products unless specifically approved. Labor Day offers cannot be combined with each other. Approved dealer pricing is the exception and can be combined with the applicable Labor Day offer. Continue Your Dundon Build eligibility is confirmed by the Dundon team. Free ground shipping on eligible orders over $2,000 remains active according to the current Dundon shipping policy; aerodynamics, brakes and wheels are excluded from free shipping.

LAST WORD

BUILD THE CAR, NOT JUST THE PARTS LIST.

Start with the right system, continue an existing Dundon Build, or talk with the team before choosing your next upgrade.

  • Start with the right system Pick the stage that changes your car the most, not the longest parts list.
  • Continue an existing build Already Dundon-equipped? We will identify the right next component.
  • Talk before you buy Model-specific guidance from people who understand the complete system.
SHOP THE SALE PLAN MY BUILD