1. Eliminates the OPF  2. No Check Engine Lights, and no tuning required  3. 992 GT3 Stock - 448whp, 992 GT3 with Street Headers is 476whp (so far)… 4. Weight savings over stock: 321 Stainless Steel Muffler version: 10 lbs lighter than stock Titanium...

The 992 GT3 and 991.2 Speedster mark a drastic departure in exhaust configuration when compared with the last 15+ years of 911 GT3. Gone are the large side mufflers and nearly universal center muffler. The 992 platform has a gigantic and complicated center muffler...

The 992 GT3 and 991.2 Speedster mark a drastic departure in exhaust configuration when compared with the last 15+ years of 911 GT3. Gone are the large side mufflers and nearly universal center muffler. The 992 platform has a gigantic and complicated center muffler...

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...

Dundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.2 GT3! We were able to keep all of the things that people love about our race headers: less weight more power, great sound, quiet when you want it to...

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!

Hardware Kit to Install a 321SS Lifetime Dundon Muffler on 997 and 991 GT3/RS cars.

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.

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,...

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...

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....