Exhaust
Dundon 321SS GT3 Cup Muffler Hardware Kit
Listed for992.1 · 991.2 · 991.1 · 997.2 · 997.1 · 981Cup, GT4, Spyder, Cayman S
$405
Regular price
−0% · Sale
You save · ends Nov 30
Made to order
Welded parts (mufflers, headers) usually ship in about 7 business days. We call you if that changes.
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30-day Dundon GuaranteeLove it or send it back within 30 days.
Dundon Motorsports stands behind our products with a 30-day love-it guarantee. We are confident in the quality and performance of our 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.
Overview
Hardware Kit to Install a 321SS Lifetime Dundon Muffler on 997 and 991 GT3 Cup cars. The 2.5" version also works for 981 GT4/Clubsport cars retrofitting a GT3 muffler using our adapter kit.
Kit includes:
- Flanges (2.5" for stock headers or 3" for Dundon Headers)
- "Donut" gaskets
- 12 lock nuts
Specs
- Part numbers
- 2.5" (for OE Cup Muffler) 104-20020
- 3.0" (for Dundon Muffler) 104-20021
- Brand
- Dundon Motorsports
- Listed for
- 992.1, 991.2, 991.1, 997.2, 997.1, 981 · Cup, GT4, Spyder, Cayman S
- Condition
- New
What owners say
450+ independent reviews
Average 5.0 out of 5. Average from verified buyers, collected by Loox.
Recent reviews from other Dundon owners
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Rated 5 out of 5. Verified buyer
These guys are the best!!!! I’m beyond happy with the quality and service I got from Dundon. I’ll forever come back! Thank you guys
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Rated 5 out of 5. Verified buyer
Being a shop owner, I've seen dozens of exhaust brands. Non come close to the fitment of this dundon system. Fit Like a porsche OE product, sounds like a RSR Cup car. I'm impressed. You get what you pay for!!!
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Rated 5 out of 5. Verified buyer
Just installed the full Dundon full exhaust (Street Headers and SS muffler, PVD black tips) on my 992.2 GT3 Touring. The craftsmanship and build quality are outstanding. The exhaust really brings the 4.0L flat-six to life - a must have for .2 GT3. No CEL. Very impressed with the overall quality, ...