Dundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991 GT3RS and 911R are available now!   * Muffler shown is not included with the system, only to see how the system goes together! 

The 93mm Throttle Body has 28.6% more area than the 82mm throttle body, while the Dual Reverse Cone Airbox has 380% more Filter area that the flat panel OEM air box. Less pressure drop means more horsepower!

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

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...

Reduce lift in the front of your 991.2 GT3 and GT3RS and aid in turn in grip!  These Dual Dive Planes were designed with Computational Fluid Dynamics to aid in shape in placement and are part of our complete Aerodynamic upgrade package for the...

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...

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

991.1, 991.2 GT3RS and 991.2 GT2RS: Carbon Fiber Gurney Flap to aid in down force without excessive angle of attack. Attaches with 3M double sided tape for a secure and easy installation.

To go faster on track you need to corner faster, brake quicker and be able to put the power down more efficiently. This is why efficient aerodynamics are key. You will have more confidence, have more fun on track and set faster lap times...

We'd been asked by a few to make a Crack Pipe that wasn't as much of a commitment but still true to the original Megaphone Crack Pipe. Meet the Mini Crack, this one works with Dundon valved side muffler deletes or our Street Headers, for...

You Want Great Sound? You Want Drone Free? You Want the LIGHTEST muffler for your Porsche?   We've got what you're looking for!  Our Titanium Ultralight GT3 Muffler is all of the above, with a signature Titanium shriek at high rpm, and no bleeding ears on...

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....

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...

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...

Replacement air filters (pair) for use with Dundon Dual Reverse Cone Airbox for 991 GT3RS cars.   *filters only

Full Conversion Kit with Hats, Hardware and Rotor Rings. Sold in Pairs.

  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....

Ferodo DS1.11 Track Pads for Radi-CAL Calipers including burnishing.

Full Conversion Kit with Hats, Hardware and Rotor Rings. Sold in Pairs.

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.