SKU: 90994097385

Kline Innovation Audi RS5 4.2 V8 Valvetronic cat-back with 100/200cell downpipes

Sale price$2642.85 Regular price$2936.50
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Kline Innovation Audi RS5 4.2 V8 Valvetronic cat-back with 100/200cell downpipesKLINE INNOVATION Replacement of the stock 600cpsi catalysts, with either high flow HJS cores, or de cat pipes, opens up the sound significantly, as well as drastically improving turbo spool for increased power, and reduced spool time. This coupled with the twin 70mm dual oversized down pipes, and 89mm oversized center section, as well as flow optimized pipe free of compressions, allows the engine to reach its full potential. An additional laser cut

KLINE INNOVATION

Replacement of the stock 600cpsi catalysts, with either high flow HJS cores, or de-cat pipes, opens up the sound significantly, as well as drastically improving turbo spool for increased power, and reduced spool time. This coupled with the twin 70mm dual oversized down pipes, and 89mm oversized center section, as well as flow optimized pipe free of compressions, allows the engine to reach its full potential. An additional laser cut aluminium cross member is included with the exhaust, to allow for the oversized center pipe.

The rear silencer section, working with the cars stock electronic actuated valve system, we crafted a set of light weight, valvetronic rear silencers. on valve open the system becomes completely freeflow, for optimum performance, and aggressive sound. under valve closure, exhaust gases are diverted through a series of chambers and acoustic filled section, tuned towards low rpm torque, and a very quiet volume at cruising speeds.

The rear section is finished off with a set of quad carbon fiber tails, manufactured in house from pre-preg F1 grade carbon fiber, with inlaid branding.


THE SPECIFICS

The Specifics

Downpipes 70mmOD dual, and single 89mm center pipe.
Rear section, 70mm dual pipe, and quad 63mm, chosen for a balance of fast turbo spool, torque, and peak power.


Catalysts

HJS HDPE motorsport 100 cell, or 200 cell catalysts available, or de-cat pipes for optimum performance and sound


Materials

INCONEL 625 (formula one grade)
Also available in 304 stainless

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: 90994097385

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4.7 ★★★★★
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Verified Purchase
Melisa F
Natrona Heights, US
★★★★★ 3
Good quality, but hard
Color: Brown
The leather and metal seem to be of very good quality. My son bought this as his office/study chair. He is starting medical school and liked the professional look of this chair. He is 6’ tall and 200lb. There does not seem to be an issue with the chair rolling even with his weight. The chair is very ‘hard’ not that comfortable if you need to sit in it for long periods. Since my son needs to be staying awake to study, this will work for him as he won’t be able to get too comfortable and fall asleep.
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Reviewed in the United States on March 27, 2026
S
Verified Purchase
Saeed Rabbanifar
Louisville, US
★★★★★ 5
Easy assembly and smooth movement
This chair has been a great addition to my home office. The assembly instructions are simple and easy to follow. The height adjusts smoothly, and the chair is very comfortable. I sit at my desk for about 9 hours a day, and this chair makes it easy to stay seated and work for long hours without discomfort. The cushioning and back support are solid. It spins well, and the wheels move smoothly. The build quality feels sturdy and reliable. Overall, a great value and a solid choice for anyone with a desk job. Highly recommend.
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Reviewed in the United States on April 5, 2026
J
Verified Purchase
Jim N.
Pawtucket, US
★★★★★ 5
Great chair
Color: Brown
Love this chair. Very comfortable and supportive. Color matches my leather couch perfectly. Time consuming to put together.
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Reviewed in the United States on June 5, 2026
L
Verified Purchase
Langle
Charlottesville, US
★★★★★ 5
Beautiful and very steady office chair
Color: Brown, Color: Brown
Beautiful, Ergonomic, and very steady for this good quality leather office chair. The side armrests and the back support are very comfortable to seat. The assembly instruction and illustrated photos are quite simple to follow which make ease of assembly. I got the brown color leather which matches perfectly with my desk. Overall , I am very please with this office chair
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Reviewed in the United States on February 18, 2026
Y
Verified Purchase
Yve
Port Orchard, US
★★★★★ 5
Stylish, Comfortable, and Great Quality
Color: Brown
I am absolutely in love with this chair! The brown leather looks very premium and fits my home office aesthetic perfectly. It was easy to assemble and feels very sturdy. The lumbar support is just right for long working hours, and the rocking feature is a nice bonus. Definitely worth the price!
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Reviewed in the United States on March 26, 2026

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