Kline Innovation Porsche 991 Carrera Valvetronic system
SKU: 69697340145

Kline Innovation Porsche 991 Carrera Valvetronic system

Sale price$2416.25 Regular price$2684.72
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Description

Kline Innovation Porsche 991 Carrera Valvetronic systemTHE SPECIFICS Cross Sections Manifolds TBC center silencer section, 60mm wing silencers, 60mm 57mm Catalysts 118mm OD Materials Available in standard 304 grade stainless steel, weight wing silencers 6. 5kg each, center silencer 11. 9kg Inconel 625 formula one grade material, weight wing silencers 3. 8kg each, center silencer 7. 2kg Titanium G2 silencer section is also available, weight comparable to Inconel Tails, made from aerospace grade carbon

THE SPECIFICS

Cross Sections

Manifolds - TBC
center silencer section, 60mm
wing silencers, 60mm - 57mm
Catalysts 118mm OD

Materials

Available in standard 304 grade stainless steel, weight wing silencers 6.5kg each, center silencer 11.9kg

Inconel 625 formula one grade material, weight wing silencers 3.8kg each, center silencer 7.2kg

Titanium G2 silencer section is also available, weight comparable to Inconel

Tails, made from aerospace grade carbon fiber, and a choice of inconel or stainless steel inserts

The Sound

Capitalising on the design innovations and success of our 996 and 997 range, the starting point for designing the 991 Carrera exhaust had been set high. Our trademark perfect x pipe geometry, harmonically tuned silencer geomtery, Inconel 625, and our proprietry acoustic silencer packing materials result in a system that has become famous for that perfect sound. Zero drone, and a raised pitch raucious incindiary howl in higher rpms and hard throttle

The x pipe geometry, designed to give a particular tone, a tone which has become synonymous with all kline systems as they all share the same relative geometry. This geometry within the x pipe is the result of a lot of R&D work specifically around tonal quality of exhaust notes (and I know it just looks like a simple x pipe) but minor changes in its geometry vastly effect exactly how the gas resonates at varying rev regions and gas throughput, and therefore have a pretty big impact on the sound.

Under valve open the system becomes completely free flow, the exhaust discharge only flows through the x pipe, and a very short resonator section of silencer, this is just to take the harsh edge off of the exhaust note, so your left with an aggressive yet smooth sounding exhaust note, just loud enough to turn heads and fill the cabin with a pleasurable sound and driving experience .

Under valve closure, the gasses pass through 4 chambers, and 4 resonated sections, and the x pipe bringing the car into just a touch louder and smoother than stock. This makes the cruising driving virtually silent.

The resonant qualities of the material Inconel produces an extra richness to exhaust note that you simply just don’t get with any other material, really it is just intoxicating in the flesh!

Performance

Final Data on exact power figures is still being collated, but preliminary testing indicates a maximum power gain for the decat variant in the region from 21-25whp and 28-34nm torque Available with a variety of HJS catalysts, in either 100 cell 200 cell, hdpe perforated foil.

 

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
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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: 69697340145

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Rick
Grantham, US
★★★★★ 5
Durable
Size: 6 Big Kid, Color: Aqua/Multi
Good shoes. True to size
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Reviewed in the United States on February 18, 2026
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Ángela Sánchez
Draper, US
★★★★★ 5
Cumplimiento
Size: 13.5 Little Kid, Color: Light Pink
Producto de gran calidad , acorde con lo escrito en la descripción. Llegaron antes del tiempo estimado
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Reviewed in the United States on May 14, 2026
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Kelly
Los Angeles, US
★★★★★ 5
Very stylish
Size: 3.5 Big Kid, Color: Light Pink
My daughter was so excited to get these shoes. They are stylish and comfortable!
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Reviewed in the United States on April 22, 2026
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Heather T.
Whiting, US
★★★★★ 1
Too tight at opening
Size: 13 Little Kid, Color: Light Pink
I bought a size larger for my child, and the foot won’t go in. Her other sketchers slides are great. But I do not recommend this model.
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Reviewed in the United States on April 7, 2026
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Ángela Sánchez
Belleville, US
★★★★★ 5
Cumplimiento
Size: 13.5 Little Kid, Color: Light Pink
Producto de gran calidad , acorde con lo escrito en la descripción. Llegaron antes del tiempo estimado
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Reviewed in the United States on May 14, 2026

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