SKU: 46300774490

Kline Innovation Porsche 991 GT3 / GT3 RS (gen 1/ gen 2) DECAT manifolds

Sale price$1282.02 Regular price$1424.47
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Ships within 48 hours · Estimated delivery Aug 18 - Aug 23

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Description

Kline Innovation Porsche 991 GT3 / GT3 RS (gen 1/ gen 2) DECAT manifoldsThe Sound Starting at the manifolds, replacing the stock cats for our 100 cell, or long tube catless Inconel headers opens up the sound significantly. The gases are then passed through one of 2 channels. On valve closed, the gases pass through our harmonically tuned, and internally ceramic insulated wing silencers to remove unwanted drone during highway cruising, and into the center muffler, and finally our trademark 1D CLR x pipe, this setup keeps

The Sound

Starting at the manifolds, replacing the stock cats for our 100 cell, or long tube catless Inconel headers opens up the sound significantly. The gases are then passed through one of 2 channels. On valve closed, the gases pass through our harmonically tuned, and internally ceramic insulated wing silencers to remove unwanted drone during highway cruising, and into the center muffler, and finally our trademark 1D CLR x pipe, this setup keeps the car very civilised when you want it to be.
On valve open The wing and center silencers are completely bypassed, allowing the gasses to pass freely through the exhaust system. The geometry of the Kline 1D CLR X pipe raises the pitch of the exhaust significantly into a raucous, yet beautiful, incindiary scream, without causing any restriction to the gas transit. The material Inconel 625 also has a unique sound, further enhancing the natural charachteristic sound of the kline system. The sidewall is very thin, and resonates to produce an even higher pitched scream at high revs.

Performance

The largest performance gain comes from replacing the catalysts in the stock headers. The Kline headers and full system are designed to work in conjunction with eachother for optimum performance and sound. The Kline system and headers are available in 2 options, 100 cpsi catalysts producing a largest gain of 18 hp and 27nm, or decat long tube headers producing a largest gain of 24hp and 35nm.


THE SPECIFICS

Materials

Inconel 625, Manifolds decat 2.3kg each,
wing silencers 4.6kg each,
center silencer with tips 5.9kg each.
Total weight manifold back, 15.1kg,
Total weight Inc manifolds 19.7kg
19.2kg weight saving

304 grade stainless,
Manifolds 4kg each,
wing silencers 8.5kg each,
center silencer with tips 10.5kg
Total weight manifold back 27.5kg
Total weight Inc manifolds 35.5

Cross Sections

All cross section have been selected for a balance of peak torque and power

Manifolds
Primaries 51mm
Secondaries 70mm

Rear section
valve open, tapered 70mm into 63.5mm Xpipe
valve closed, 57mm into wing silencers

Tips
choice of 89 mm or 1o1mm, double walled inconel
or Carbon fiber

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 46300774490

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Amazon Customer
Grantham, US
★★★★★ 4
Toddler sandals
Size: 8 Toddler, Color: Tan River Gem, Size: 8 Toddler, Color: Tan River Gem
Overall, these shoes are great for keeping near the back door and having shoes to throw on when my son wants to play outside. However, I would not necessarily have these be every day shoes as they don't feel as durable as some of his other sandals. The bottom of the shoes don't have a lot of grip, so I would caution against using these as water shoes. They are very adjustable and flexible though. And for the price, these are great "let's go outside" shoes. I like the color and function of these shoes, and my son doesn't seem uncomfortable in them. My biggest gripe is how large a size 8 is. They seem very big for a toddler size 8. I put some earbuds next to them for a size comparison in case you're like me and order true to size. You may want to size down for these. Other than that, these do the job for the price point.
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Reviewed in the United States on May 6, 2026
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Melissa Dudlets
Charlottesville, US
★★★★★ 5
Good for wide or fat baby feet
Size: 18-24 Months Toddler, Color: Mariposa White Leather
Perfect fit for babies with wider chubbier feet easy for them to learn how to walk in with the leather soles also cute
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Reviewed in the United States on April 24, 2026
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noah q.
Lake Worth, US
★★★★★ 2
Way too big
Size: 6-9 Months Infant, Color: Mariposa White Leather
Adorable but sizing is WAY off. These are massive and look like toddler shoes on our (tall and bigger footed) 7 month old.
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Reviewed in the United States on March 21, 2026
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Julia Tolstunova
Charlottesville, US
★★★★★ 2
Cute but flimsy soles
Size: 9-12 Months Infant, Color: Mariposa Light Pink Leather, Size: 9-12 Months Infant, Color: Mariposa Light Pink Leather
I wanted to love these because they're the few leather options out there. Unfortunately, the soles are made of a flimsy material that came apart after less than 2 weeks of wear. Not sure how long they'll last...
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Reviewed in the United States on June 21, 2025
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Melissa Dudlets
Houston, US
★★★★★ 5
Good for wide or fat baby feet
Size: 18-24 Months Toddler, Color: Mariposa White Leather
Perfect fit for babies with wider chubbier feet easy for them to learn how to walk in with the leather soles also cute
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026

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