• Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Carbon Fibre Tips
  • Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Carbon Fibre Tips

Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Carbon Fibre Tips

$4,120.57
$4,120.57
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Milltek Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (Non Sport Diff models). Direct factory fitment using OEM hangers; no modification required. 2.50" (63.50mm) mandrel-bent T304L stainless steel construction with quad JET-100 carbon trim tips.

The resonated design eliminates drone at cruising speeds while preserving full-throttle character. Hand-finished T304Lstainless steel resists corrosion and thermal cycling. Engineered for OEM+ fitment and proven dyno gains on the 3.0L turbo V6 platform.

Fitment

  • Audi S4 B9 3.0 Turbo V6 Saloon/Sedan & Avant (2016+, Non Sport Diff)
  • Audi S5 B9 3.0 Turbo V6 Sportback (2017+, Non Sport Diff)

Milltek manufactures this system in-house from raw T304L material to finished assembly.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Carbon Fibre Tips

$4,120.57

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    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

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Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.