SKU: 59912999194

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

Sale price$1506.15 Regular price$1673.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 28 - Sep 2

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Description

Milltek 2.5" Valved Non-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
- Left and Right front silencer replacement pipes
- 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: 59912999194

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Grantham, US
★★★★★ 5
Quality!
I’ve used Liqui Moly in all my cars. Now that they have oils for Marine, that’s the only oil I’ll use from now on for my boats. Not only they’re made in Germany but they also have the FCW approval, Perfect!
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Waukegan, US
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Liqui Moly 20522 Marine 4T Motor Oil 10W-30
He cambiado mi aceite anterior a Liqui Moly 4T 10W-30 y he notado la diferencia, gracias.
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walter
Lowell, US
★★★★★ 5
Best full synthetic oil I ever used.
This oil I use in my outboard and I also buy another wt oil for my car. My cars mileage went up 2-3 consistent MPG on the digital mileage counter and use in my 2020 Merc 40hp and the outboard runs smoother and oil stays clean longer. Confident in this oil better than re-branded oils and higher cost. This oil exceeds by far manufactures oil ratings. Use high quality oil filters also.
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Reviewed in the United States on January 15, 2023
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Smalls
New York, US
★★★★★ 5
Good stuff!
Yamaha F150 running great!
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Reviewed in the United States on August 11, 2021
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Sean R.
Massapequa, US
★★★★★ 5
Excellent quality
Great quality kit
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Reviewed in the United States on December 24, 2025

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