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

Can be used with Dundon cat backs, 3" side deletes, or added to our Street Header package to give you the ultimate in Performance and Sound improvements. Will turn a beautiful shade of blue when driven hard!

For a long time you had to sacrifice your street drivability if you wanted to upgrade to a motorsports damper. No longer! These dampers improve your GT3RS or GT2RS's already formidable handling, while adding adjustability and forgiveness. We help make the car easier to...

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,...

Most of us have experienced the many issues associated with both the stock Steel and Ti rear mufflers on our beloved 991.2 GT3RS. cracking, holes, not passing sound etc...  We've been reinforcing both the Steel and Ti versions for years after they crack and understand why...

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....

Available in OEM lower flow tube size for stock muffler or 3" lower flow tube size for use with Dundon Lifetime Mufflers 3" Lower Flow Path Offers 44% improvement in flow over stock 20% reduction in pressure drop over stock Use with Loud Muffler...

GT cars come from the factory with fixed-length sway bar end links. When you change the ride height without adjustable links, you risk a "non-neutral" suspension due to sway bar preload and compromised geometry. When one side sits higher, the sway bar twists to...

NOTICE: Tuning your ECU will be visible to Porsche and can potentially void your factory or aftermarket warranty.    EMISSIONS   This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results) to verify that...

Great for track cars as we can build a custom map for the shocks for each track you go to, no more fiddling with knobs or trying various settings only to end up frustrated.  We can log the cars performance and make changes to...

Contains multiple shims in various sizes for front and rear lower control arms on 991 GT3 and GT3RS cars.   Front Kit contents: 4x - .031" / .75mm 2x - .063" / 1.5mm 2x - .125" / 3.2mm 2x - .188" / 4.75mm 2x...

These 625 inconel inserts block the expansion chamber on the lower pathway, dramatically reducing the muffling effect. The combination of the titanium muffler with the loud inserts gives you the ultimate “have your cake, and eat it, too” exhaust. The quietest system we make...

Replacement tip sets for your Dundon Lifetime Muffler ONLY. Does NOT fit OE Porsche Mufflers. Proper tip length is important, so please ensure you select the correct application.