Exhaust

718 GT4 Street Header and Mega Crack Pipe Exhaust

Dundon parts: 450+ independent reviews

Listed for718GT4, Boxster / Cayman

Confirm fit

Sale price$12,505.50 Regular price $13,895 −10% · Black Friday

You save $1,389.50 · ends Nov 30

Made to order

Welded parts (mufflers, headers) usually ship in about 7 business days. We call you if that changes.

Street Headers into the Mega Crack Pipe. Lightest, LOUDEST, and still catted!

Part # 100-30429

  • 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.

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Overview

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!

Specs

Part number
100-30429
Brand
Dundon Motorsports
Listed for
718 · GT4, Boxster / Cayman
Condition
New

Install & help

What owners say

450+ independent reviews

Average 5.0 out of 5. Average from verified buyers, collected by Loox.

Watch 100+ video reviews

Recent reviews from other Dundon owners

  • Rated 5 out of 5. Verified buyer

    Terrific responsiveness and service from Dundon!

    Pete W. · United States

    718 GT4 Lower Left Dive Plane
  • Rated 5 out of 5. Verified buyer

    Dundon never disappoints! Installation was a breeze and everything fit exactly like you would expect.

    Customer photo review of 718 GT4RS Street Header Package

    Ryan R. · United States

    718 GT4RS Street Header Package
  • 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..