Exhaust
718 GT4/Spyder/GTS Street Header and V11 Muffler Package
Listed for718GT4, Boxster / Cayman
Sale price$17,748
Regular price
$19,720
−10% · Black Friday
You save $1,972 · 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
Get the best sounding, most powerful exhaust for your 718 GT4. No compromises. Over 3 years in development and (over!) 11 Prototypes to get it right.
Great Sound, and Great Power without drone! This is the complete exhaust upgrade for your 982/718 4.0L Boxster or Cayman. This system checks all the boxes: Big performance gains, no drone, no CEL's, retains cats and valves and gives you the sweet flat-6 symphony you've been missing!
NO COBB AP OR PRO TUNE INCLUDED IN THIS KIT!!!
This system is so effective at improving performance on the GT4/Spyder/GTS 4.0L engine that a Cobb Accessport and Dundon ProTune is REQUIRED. The increased output The Accessport and Tune are included as part of this package. If you already have a Cobb AP please reach out to our sales team for a custom quote. An added benefit of the ProTune is the ability to customize the programming of your "exhaust button" to your preference.
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: Dundon Polished "935-style" tips, Dundon Polished "Megaphone-style" tips in 3D-printed 316 Stainless Steel!
There is a slight difference in the hardware needed based which gearbox the car has. Otherwise the kits are identical.
Specs
- Part numbers
- Dundon Polished "935-style" Tips / PDK 100-30726
- Dundon Polished "935-style" Tips / Manual 100-30729
- Dundon Polished 5.15" "Megaphone" Tip / PDK 100-30727
- Dundon Polished 5.15" "Megaphone" Tip / Manual 100-30730
- OEM GT4RS/Spyder RS Weissach Tip Adapters / Manual 100-30728
- OEM GT4RS/Spyder RS Weissach Tip Adapters / PDK 100-30725
- Brand
- Dundon Motorsports
- Listed for
- 718 · GT4, Boxster / Cayman
- Condition
- New
- Muffler Tip Option
- Dundon Polished "935-style" Tips · Dundon Polished 5.15" "Megaphone" Tip · OEM GT4RS/Spyder RS Weissach Tip Adapters
- Transmission
- PDK · Manual
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
Terrific responsiveness and service from Dundon!
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Rated 5 out of 5. Verified buyer
Dundon never disappoints! Installation was a breeze and everything fit exactly like you would expect.
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Rated 5 out of 5. Verified buyer
Great quality! Just print instructions and make sure to print template at 100% . 67 lb paper is perfect for template..
