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PORSCHE 718 GT4

Performance upgrades for the 718 GT4

Exhaust, aero, suspension, brake, wheel and track-focused upgrades for the Porsche 718 GT4.
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  • Engineered & tested in-house
  • Track-proven performance
  • Model-specific fitment guidance
  • Dundon 30-day guarantee

718 GT4 Best Sellers

Start with your 718 GT4 goal

Choose the right upgrade path

Pick the goal first, then shop 718 GT4 parts that match how the car is actually used.

Aero 3 hand-picked products

I want more front grip and balance at speed

Start with proven 718 GT4 aero pieces that add confidence without losing the clean mid-engine feel.

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Browse 718 GT4 upgrades by collection

Scan curated 718 GT4 upgrade collections without leaving the landing page.

Confirm exact fitment before ordering

718 GT4 TOP Products

33 products
Showing 12 of 33

Engineered in-house

Proven where it matters.

Built for 718 GT4 owners who want measured upgrades, cleaner setup choices and confidence in the way parts work together. Exact fitment still matters: brake package, axle lift, wheel and tire choice, sound limits, emissions requirements and intended use all shape the right build.

In-house design and testing

Built in-house

In-house design and testing

Dundon parts are developed around Porsche platforms as complete systems, so power, exhaust, aero, suspension, brake and wheel choices can work together.

Dyno, scan and track validation

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.

Mid-engine balance, track intent

Street + track

Mid-engine balance, track intent

Sharper when pushed, still predictable enough to drive home. That balance matters on a 718 GT4.

Support from Porsche specialists

Real support

Support from Porsche specialists

Guidance from people who understand 718 GT4 fitment, alignment range, sound limits and real track use.

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

EXPERT FITMENT HELP

Build the 718 GT4 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 718 GT4, fitment constraints and goals.

  • Goal-based setup Street, canyon, 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 718 GT4 upgrade path before committing to premium parts.
Book expert fitment help