SKU: 86344825333

iE Catback Exhaust System - Audi B9 S5

Sale price$786.60 Regular price$874.00
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Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

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Description

iE Catback Exhaust System - Audi B9 S5YOUR STEREO IS OBSOLETE Make your presence known with the feral sound of the iE Catback for your Audi B9 S5. Thanks to iEs innovative and proprietary DroneTrap technology, enjoy unrestrained ferocity without the annoying drone. Engineered with mandrel bent stainless steel, TIG welding, multi point reinforcements, and oversized quad tips, its a beauty and a beast all in one. LEADING FEATURES Say it loudly Aggressive, yet refined exhaust note DroneTrap


YOUR STEREO IS OBSOLETE

Make your presence known with the feral sound of the iE Catback for your Audi B9 S5. Thanks to iE’s innovative and proprietary DroneTrap technology, enjoy unrestrained ferocity without the annoying drone. Engineered with mandrel-bent stainless steel, TIG welding, multi-point reinforcements, and oversized quad tips, it’s a beauty and a beast all in one.

LEADING FEATURES

  • Say it loudly -Aggressive, yet refined exhaust note
  • DroneTrap Technology -Proprietary no-drone resonator
  • Aggressive look -90mm slash-cut quad tips 
  • High flow design -Dual 2.5" piping for any power output
  • Easy Install -No cutting, no welding, no hassle
  • 50 states legal -No check engine light & emissions compliant

iE DRONETRAP TECHNOLOGY

iE’s advanced DroneTrap technology utilizes mathematically tuned resonators to cancel out the sound waves that cause drone, leaving the audacious, feral waves free to conjure deep, satisfying roars and rumbles.

QUAD SLASH-CUT 4" TIPS

Add a dash of non-stock flair with oversized, 90mm quad slash-cut exhaust tips. These aggressive-looking tips fill the factory exhaust cutouts, creating a high-end, sporty look.

BUILT TO ENDURE

Sound may be the primary feature of iE’s Catback Exhaust, but durability and reliability play a significant role. This catback is made from mandrel-bent T304L stainless steel, featuring hand-TIG-welded joints and several structural details for added strength and integrity. The stamped, multi-wall muffler prevents warping, while reinforced hangers ensure a secure mounting. Strength-boosting bridged piping distributes weight, reducing stress and vibration. Wide-width stretch clamps ensure tight and leak-free connections.

INSTALLATION

The installation process is straightforward, without any permanent modifications or installation hassles. You’ll need standard mechanic tools, and an auto-lift is highly recommended.

AVERAGE INSTALLATION TIME: 3-4 HOURS


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: 86344825333

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Joseph Raley
Natrona Heights, US
★★★★★ 5
Great socks
Size: Large, Color: (001) Black / Black / White
Great socks. Very comfortable. Use these socks for work. I walk up to 10 miles in 8 hours at work and these socks stay soft and in place when I get home
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Reviewed in the United States on December 26, 2025
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Lyndon
Houston, US
★★★★★ 5
Good sock
Size: Large, Color: (100) White / White / Black
I love this socks.
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Reviewed in the United States on May 30, 2026
K
Verified Purchase
KJ
Dallas, US
★★★★★ 5
Super Comfortable and Great Quality!
Size: Medium, Color: (001) Black / Black / White
These Under Armour socks are hands down some of the best I’ve ever worn. They are incredibly soft, breathable, and provide just the right amount of cushioning for all-day comfort. Whether I’m working out, running errands, or just lounging around, they feel great on my feet. The fit is perfect—not too tight, but snug enough to stay in place without slipping down. Plus, they hold up well after multiple washes without losing their shape or softness. If you’re looking for high-quality, comfortable socks that feel amazing to wear, these are definitely worth it. Highly recommend!
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Reviewed in the United States on February 28, 2025
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Brian
Charlottesville, US
★★★★★ 4
Good sock, size is a little big
Size: Large, Color: (100) White / White / Black, Size: Large, Color: (100) White / White / Black
Good quality material and fairly thick. Size large for a 9.5 shoe is a little big for the foot portion as the heel sits too high but the overall length is good.
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Reviewed in the United States on May 17, 2026
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McKay
Belleville, US
★★★★★ 5
Great sock
Size: Large, Color: (100) White / White / Black
Love these socks Fit great
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Reviewed in the United States on February 28, 2026

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