




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.
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.
Get the best sounding, most powerful exhaust for your GT4RS Clubsport. No compromises. You want it LOUD, this is LOUD!! Paired with our 93mm intake package your GT4RS CS will haul the mail!
Great Sound, and Great Power without drone!
We have spent the last TWO YEARS building, testing, iterating and improving this design. Now it's finally ready.
Using the latest technology in additive manufacturing, made from 347SS 3D-printed internals, this design keeps the “valve-open” pathways as short as possible, but still merges the waveforms of both banks for the great flat six symphony we're all wanting.
Nice and quiet when you want it to be, the right kind of flat six scream when you ask for it!
Choice of tips: keep your OEM Weissach Tips, Dundon Polished "935-style" tips, Dundon Polished "Megaphone-style" tips in 3D-printed 316 Stainless Steel!
Makes 32whp at 8000rpm and 37lbft at 4500rpm in additional power over the car stock!
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