SKU: 53413277279

Milltek 2.5" Valved Resonated Cat Back Exhaust - Audi B9 S4 | S5 | 3.0T (w/ Sport Diff)

Sale price$2235.60 Regular price$2484.00
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 20 - Aug 25

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Description

Milltek 2.5" Valved Resonated Cat Back Exhaust - Audi B9 S4 | S5 | 3.0T (w/ Sport Diff)Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper

Performance to blow your mind, not your ears! Improve performance and your vehicle's sound with this cat-back exhaust system from Milltek. Milltek engineers took on the task of finding the perfect balance between maximum performance increase and a responsible noise level in each and every system, to appeal to enthusiasts of all levels. All products are direct replacements for factory exhaust systems, meaning no modifications are required for proper fitment.

This cat-back exhaust system is manufactured of a 2.50" T304 anti-magnetic stainless steel that is less susceptible to discoloration when compared to other systems found on the market. This quality T304 stainless steel is used on all of the pipework including the construction of the mufflers and resonators. Mandrel bending ensures full flow bends for better exhaust gas flow and Milltek systems are increased in bore to ensure the ultimate performance without the loss of mid-range torque. This exhaust allows you to retain the use of the factory exhaust valve system.

The valved mufflers reuse the factory valves from the OE system and seamlessly integrates into the car's vacuum system without any modification. The valve system is operated like stock through the Drive Select options.

Note: These systems are for vehicles with the Sport Differential.

Product Details:

- Available in 2.5"
- 2 post-cat downpipes
- Center front silencer section
- 2 Valved rear mufflers
- Choice of Tips: Quad GT-90 or GT-100 Polished or Cerakote Black. Quad Polished or Cerakote Black Ovals.

- Highest quality aircraft-grade stainless steel
- Sharper throttle response
- Substantial weight savings
- Precision quality
- Reduced back pressure for max performance - no loss of low end torque!

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: 53413277279

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4.3 ★★★★★
Based on 13 reviews
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smhism
Massapequa, US
★★★★★ 5
Might buy a couple more.
Color: Demin Blue, Size: Large
In the process of losing weight and needed a nice looking shirt for work without spending a lot of money on something that will only fit for a few months. This did the trick! Fits well, looks nice, and at a great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
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Verified Purchase
Tommy I.
Louisville, US
★★★★★ 4
The fit is pretty good, it's acceptable.
Color: Navy Blue, Size: X-Large
Very good fit. The sleeves are long enough, I guess. I'll be rolling them up anyway. I would like it to be a tad bit longer though for tucking in. Other than that it feels nice and lightweight, can't wait to wash it so I can use it for going out.
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Reviewed in the United States on May 18, 2026
J
Verified Purchase
José R.
Chelsea, US
★★★★★ 5
The product is good.
Color: Grey, Size: Medium
Good for all weather, don’t need to iron, I use it for all occasions specially for work, is good material, good quality, price is right, I like the color.
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Reviewed in the United States on May 31, 2026
R
Verified Purchase
R and J Coe
Charlottesville, US
★★★★★ 5
Great for the Money
Color: Blue, Size: X-Large
Nice cut. Properly sized. Great product for the money.
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Reviewed in the United States on May 29, 2026
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Bobby
Bozeman, US
★★★★★ 5
I like it!
Color: Khaki, Size: Large
Worth the price. Comfortable. Great assortment of colors.
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Reviewed in the United States on May 21, 2026

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