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...
Street Header/Lifetime Muffler Power Package (2016 991.1 GT3RS)
$15,195.00
$15,195.00
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The Dundon Guarantee
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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
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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.
Street Header/Lifetime Muffler Power Package (2016 991.1 GT3RS)
Lifetime Muffler (Quiet or Loud w/ PVD Black or Titanium Tips)
Dundon Street (Catted) tuned length headers and valved side delete exhaust system for the 991.1 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 be
no drone
lifetime structural warranty
100% 30 day money back guarantee
If you try it and don't like it, send it back and we'll give you your money back!
We use 321SS (a superior grade of Stainless steel to the cheaper 304SS) and use a metal core spiral wound 200CPSI catalytic converter. All our products are mfg in the USA in our shop in Gig Harbor, WA.
By routing the primaries up and positioning the catalytic converter more vertical we were able to retain 99% of the primary length of the race system. This is how we are able to achieve 31whp gains on the 991.1 GT3RS.
You get everything you love about the Dundon Race Headers; 321 SS construction, industry leading power, lifetime structural warranty, and 100% money back guarantee, if you try it and don't like it, send it back and we'll give you your money back!
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...