Want to dial in the perfect alignment for your 991 GT3 or GT3RS? Dundon Motorsports' shim kit is what you need. All the sizes you want to get your settings perfected.

ONLY FOR 991.2 GT3RS with our Swan Neck Rear Wing. Adding this to a car with stock rear wing will make the car unstable due to too much front downforce. Add much needed front downforce to your GT3RS. Designed to complement the 991 GT3RS Swan Neck...

The track day gear back you've been waiting for!

The PFC Ultimate Brake Kit for your Porsche. Using the same technology found on the Porsche Motorsport 991 GT3 Cup platform.

Upgrade your car's handling with DSC! This revolutionary device turns your passive PASM system into an active suspension system with multiple personalities. The DSC module monitors acceleration, brake application, G forces, and many other parameters to tune your car's handling in milliseconds.

We're honored to be the exclusive partner of Motion Control Suspension bringing true motorsports dampers to the 991 GT3RS and GT2RS. 

Upgrade your car's handling with DSC! This revolutionary device turns your passive PASM system into an active suspension system with multiple personalities. The DSC module monitors acceleration, brake application, G forces, and many other parameters to tune your car's handling in milliseconds.

At Dundon, we test our products endlessly to ensure the utmost quality. And over time, we found the factory muffler couldn’t keep up with the added performance our Headers provide. We set out to fix that. The result — Dundon’s GT3 Lifetime Center Muffler....

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...

If you want to go faster on street and on track, then: Double the Downforce of the Stock 991.2 GT3RS. Make the air do your bidding and improve the aerodynamic performance of your GT3RS.

  Enjoy 347 Stainless construction, same high quality valves as used in our battle tested Race Headers. Reduce weight through the elimination of side mufflers, reduce heat on the rear tires and under the decklid, no Drone, and 100% Lifetime Guarantee, including track use....

The Accessport V3 is the world’s best ECU tuning solution for Porsche. The simple DIY plug and play connection to the car’s engine management system via the OBDII port allows for any GT3 owner to apply improved engine and PDK calibrations to their favorite...

At Dundon, we test our products endlessly to ensure the utmost quality. And over time, we found the factory muffler couldn’t keep up with the added performance our Headers provide. We set out to fix that. The result — Dundon’s GT3 Lifetime Center Muffler....

Dundon Street (Catted) tuned length headers and valved side delete exhaust system for the 997.2 GT3RS are available now! We were able to keep all of the things that people love about our race headers: scroll down to learn more! *V2.0 Headers shown -...

Replacement set for PFC Track Day Kit equipped vehicles. Not compatible with OEM calipers.

Replacement set for PFC Track Day Kit equipped vehicles. Not compatible with OEM calipers.

Why do you need adjustable sway bar end links? To ensure perfect corner-balance and zero pre-load on your sway bars with Dundon Motorsports' NEW adjustable sway bar end link set (front & rear).   When your 991 GT3 or GT3RS is corner-balanced or even...

    Pre-Owned Header System for 991.1 and 991.2 GT3, GT3RS, 911R and GT3 Touring.    2.5" Outlets are for use with Stock Muffler and 3.0" Outlets are for use with Dundon Mufflers.   

Clone - an exact copy of the original. In our case we're talking about taking the fear and anxiety out of having a tune on your GT car and extracting and tailoring the ecu to take the most advantage of your modifications in a...

Ferodo DS1.11 for 991 GT3 Steel and PCCB Calipers