FI Exhaust Cat-Back System For Audi 8Y RS3 Sportback 2021+
SKU: 6090227428

FI Exhaust Cat-Back System For Audi 8Y RS3 Sportback 2021+

Sale price$1746.00 Regular price$1940.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

FI Exhaust Cat-Back System For Audi 8Y RS3 Sportback 2021+Audi 8Y RS3 Sportback 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

Audi 8Y RS3 Sportback 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 8Y RS3 Sportback 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.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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: 6090227428

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Gabrielle
Louisville, US
★★★★★ 5
Postpartum Opinion
Fit Type: Boyshort, Size: X-Large, Color: Assorted Colors
Bought the boy shorts size XL for postpartum and am still wearing them 8 months later! Holds all the postpartum goods in but are super stretchy too. Sooooo comfy! They do roll up when putting pants on but if you’re wearing them to bed or around the house, amazing!
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Reviewed in the United States on March 30, 2026
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NatureNerd
Alexandria, US
★★★★★ 3
To fit or not to fit?
Fit Type: Boyshort, Size: XX-Large, Color: Assorted Colors
NIce quality, comfortable fabric, dries quick, and retains color after multiple washings. However; the fit did not work 100% for me. The legs kind of rode up and the boy shorts had a tendency to ride down, especially with consistent bending up and down activity. Good product but not a perfect fit for my shape. The bikini style was ideal and purchased multiple times.
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Reviewed in the United States on April 7, 2026
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Lotanya Mclean
Lowell, US
★★★★★ 5
Comfortable
Fit Type: Boyshort, Size: Medium, Color: Assorted Colors
These are very comfortable, lovely colors. You need to size down when purchasing a the material is high stretch.
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Reviewed in the United States on May 26, 2026
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Kim
Cuba, US
★★★★★ 5
Great choice
Fit Type: Boyshort, Size: XX-Large, Color: Assorted Colors
Very comfortable
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Reviewed in the United States on May 24, 2026
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bopster429
Houston, US
★★★★★ 5
Very comfortable, right length
Size: Large, Color: Black,grey
This product arrived as described. I like the trunk length, not the boxer brief length. They are comfortable. Hold up well when worn and washed. I don't seem to sweat as much. These were ordered to replace ones ordered about 2-3 years ago due loss of weight, had to down size. The waist band doesn't roll as like other brands.
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Reviewed in the United States on May 20, 2026

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