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...
Dundon Motorsports stands behind our products with a 30-day love it guarantee. We are confident in the quality and performance of their upgrades, but if for any reason they don't meet your standards or help you push your performance on track, you can send them back within 30 days.
Availability & Lead Times
Learn More.
Some products are built locally and made to order.
Typical lead time for welded components (mufflers, headers) is about 7 business days after purchase.
In rare cases timelines may change—we’ll notify you by phone.
The Dundon Street headers by itself give a huge improvement to performance and the overall sound of the system, combined with the Cobb AP Pro Tune this will bring an even bigger improvement in the performance all around but especially in the mid range.
This performance increase is even further optimized with the increased air volume in this package's entire intake system. Starting off with the Dundon dual cone carbon fiber airbox that is lighter and larger which can see an increase of 8-10 whp, fixed with the 93mm throttle body we are exponentially getting more air through into our Dundon 997 GT3 intake manifold which is engineered to take advantage of all this airflow entering your engine.
Optional Items
Dundon Lifetime Muffler (Quiet or Loud, your choice of tips)
The optional items are all about giving your vehicle that unique sound while being lighter!
Our lifetime mufflers are all about well… longevity! A lifetime guarantee even including track use allows you to have worry free use while giving you two different sounds depending on your preference. The Quiet is for those customers looking for no drone* while cruising and to quiet the car at full boogie to attenuate some of the dB levels on the track or on the street. The Loud is the muffler for those looking for no drone* at cruise, but a pronounced bark when getting on it!
The two two tip options are all about what flavor of sound you're looking for!
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...