SKU: 28876033534

Fi Exhaust Cat-Back Exhaust System For Audi RS4 / RS5 (B9) 2017-2019

$2025.00 $2250.00
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Ships within 48 hours · Estimated delivery Jul 16 - Jul 21

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Fi Exhaust Cat-Back Exhaust System For Audi RS4 / RS5 (B9) 2017-2019Audi B9 RS4 RS5 Fi Exhaust (Frequency Intelligent Exhaust) high performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high grade T304 stainless steel that offers an exhilarating soundtrack. The Fi EXHAUST system is designed with a valvetronic technology to control airflow, sound volume and enhance the overall performance and torque. On average horsepower is expected to increase from 5 10% after installing a

Audi B9 RS4 / RS5 Fi Exhaust (Frequency Intelligent Exhaust) high-performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high-grade T304 stainless steel that offers an exhilarating soundtrack.

The Fi EXHAUST system is designed with a valvetronic technology to control airflow, sound volume and enhance the overall performance and torque. On average horsepower is expected to increase from 5-10% after installing a full catless system, which includes a valvetronic catback and ultra-high flow downpipe.

When valves are closed exhaust gasses are routed through the muffler resulting in a low-profile comfortable drive. However, when the valves are fully open an intense and sporty soundtrack is produced.

Depending on your car model and exhaust setup, switching exhaust valves between street and race modes may be achieved using a factory exhaust/sport button, drive modes, or by selecting the Fi Pro remote control upgrade. Please note that not all options are available for every model. Refer to the available section and contact our representative for confirmation.

The unique sound and performance for Audi B9 RS4 is achieved through individually designed muffler internals that are fabricated to offer an ultimate driving experience.

Please note each part of the Fi EXHAUST system needs to be ordered separately.
Different exhaust parts are offered depending on the vehicle version.

Please note that the actual product may vary in appearance depending on the year of the car and area. The exhaust system is also subject to changes to the design over an extended time period. Product pictures are for illustration purposes only.


Catback Exhaust:
Mid X-Pipe + Valvetronic Muffler + Dual Silver Tips + EV Extend Cable*2 (Compatible with OEM elect. Valve - No Remote Control Included) (AD-RS4B9-CBE + TIP-RS4-S + CAB-BTB*2)

Downpipes (Optional):
1.Ultra High Flow DownPipe (AD-RS4B9-NCAT)
2.Ultra High Flow DownPipe Ceramic Coating(Gold) Service Cost (AD-RS4B9-NCATCRG)
3.Sport 200 cell DownPipe (AD-RS4B9-CAT200)

Tips (Optional):
Dual Tips in Matte Black (TIP-RS4-MB)

 

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: 28876033534

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4.1 ★★★★★
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T
The Patriot Tzu
Lake Worth, US
★★★★★ 5
Nice blanket
Color: Southern Blues, Size: Full/Queen (90 in x 90 in), Color: Southern Blues, Size: Full/Queen (90 in x 90 in)
This is a really nice blanket. If fits on my bed very well. It went through the laundry really nice and didn’t fade or ripper. Have any strings come undone. I like the very light green color. My pictures aren’t great, but one side is the underneath side, the white and then the light green is the other picture. This is well-made you can see in the picture up close that it’s so really well. All layers are sewn together, so you do not have bunching up when you wash the blanket. It is super soft with a good weight. It’s not super lightweight, but it’s not heavy at all. Overall, I’m very pleased with it and I would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
T
Tanya Scoggin
Grantham, US
★★★★★ 5
Soft, Lightweight, and Perfect for Year-Round Comfort
Color: Polar Blue, Size: King (90 in x 108 in)
This Berkshire 3-layer fleece blanket is exactly what I was hoping for. It is incredibly soft and has a cozy cotton-like feel without being too heavy or bulky. The king size is generous and fits the bed nicely, but it is also comfortable enough to use on the couch. I really like that it feels warm and breathable at the same time, so it works well for different seasons. The Polar Blue color is soft and pretty, and the blanket has a nice textured look that makes it feel a little more elevated than a basic fleece blanket. It also washes well, which is a huge plus. After washing, it still feels soft and comfortable, and it did not lose its shape. Overall, this is a great blanket if you want something cozy, lightweight, and easy to care for. I would definitely recommend it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
A
Amazon Review
Grantham, US
★★★★★ 5
I love this because it folds up easily & does not take up much space but keeps you warm and secure.
Color: Southern Blues, Size: King (90 in x 108 in)
Heavy and BIG. The color is great. Its not very thick but it does have some heft to it. I love this because it folds up easily and does not take up much space but keeps you warm and secure. Its got a waffle type contour texture. It says its fleece but to me it did not feel like fleece. However, I have never heard of berkshire fleece before-- I would not guess this is fleece at all. Its not fuzzy in the least. It is breathable and the color is muted and perfect. For a king sized blanket this is surprisingly portable yet substantial enough to keep the entire bed covered and warm!
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Reviewed in the United States on May 21, 2026
C
Cheryl Belle
Bozeman, US
★★★★★ 3
Thin, summer weight throw, quality could be better
Color: Southern Blues, Size: Throw (50 in x 60 in), Color: Southern Blues, Size: Throw (50 in x 60 in)
This is a very light weight blanket and the "fleece" is no where to be seen. The blanket looks like cotton but has a very synthetic feel to it. Three layers implies some weight but it is thin. The construction is sloppy, see images, where the stitching looks slap dash to the point where it cannot be reversed. I liked the color, the blue is a little on the aqua side but it is a very nice calming hue. The stitching is quilt like and nicely done. I noticed other reviews felt like it was a medium weight but the only time I would use this would be to use as a cover if the AC went out. To me, the blanket is decorative and not particularly useful.
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Reviewed in the United States on May 15, 2026
H
Hayden
Lake Worth, US
★★★★★ 4
Average quality lightweight throw, not sold on the color
Color: Southern Blues, Size: Throw (50 in x 60 in), Color: Southern Blues, Size: Throw (50 in x 60 in)
This blanket is fairly soft and lightweight, and better suited for the summer months. I don't think the texture and "Southern Blues" color looks as nice in person as in the photos; less cozy and more like a spare blanket you might find in a hotel closet. Interestingly the care tag says that the outer faces are cotton, but the blanket feels polyester and the content tag indicates the same. The stitching and durability feel ok, and it will probably hold up for the occasional machine washing and low heat drying. Overall it's a fine warm season throw but not particularly notable. I would probably recommend one of the darker colors.
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Reviewed in the United States on May 23, 2026

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