Audi S4/S5 B9 Catless Downpipe

Audi S4/S5 B9 Catless Downpipe

$1,399.00 AUD
$1,399.00 AUD $1,599.00 AUD
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Downpipe Diameter 3.5 inch
Cat Type Catless (no catalytic converter)
Material T304 Stainless Steel
Fitment Fits stock or modified vehicles – no modifications required

Compatible with Audi S4/S5 B9 (2017–2023)

Audi S4/S5 B9 Catless Downpipe Unlock peak exhaust flow and aggressive performance with this precision-engineered catless downpipe designed specifically for Audi S4 and S5 B9 models. By eliminating restrictive catalytic converters, this component dramatically reduces backpressure and unleashes additional horsepower and torque across the rev range. The mandrel-bent construction ensures smooth gas flow while the robust stainless steel construction resists corrosion and heat degradation. Direct bolt-on fitment means zero modification required—simply install and experience the thrilling response and enhanced engine efficiency your S4/S5 deserves. Perfect for tuned builds and performance enthusiasts seeking maximum power gains.

Custom built to order — allow 7-14 business days for manufacturing

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Audi S4/S5 B9 Catless Downpipe

$1,399.00
$1,399.00 $1,599.00
Save 12% Sold out
  • 5 stars: 6 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Matt
Happy customer

Great product, fast shipping, easy install.

A
Anthony
Exactly what these cars need

The stock part is incredibly restrictive. This opened things up massively. Car feels completely different to drive, so much more eager.

S
Shane
Fast delivery too

Arrived quickly and well packaged. Product is excellent.

J
Joel
Proper performance part

This is a quality piece of kit. Not a cheap knock off.

D
Darren
Solid part

Welds are clean and it fits perfectly.

B
Brad
Pairs great with a tune

Put a remap on after fitting and the results were very impressive. Highly recommend doing both together. Build quality is excellent.