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APR Tuning

Catback Exhaust System S4 / S5 (B9) Fits Audi S4 18-25, S5 18-25 APR

$2,306.95 $2,049.95 Save $257.00

SKU: A0CU CBK0012

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The APR Catback Exhaust System for the Audi S4 and S5 (B9 chassis) is constructed from premium T304 stainless steel, featuring valve-controlled rear mufflers and an integrated Helmholtz resonator to minimize drone. It includes removable quad 3.5-inch polished stainless steel tips and is designed to improve exhaust flow and sound.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandAPR Tuning
Part NumberA0CU CBK0012

Videos

2019 Audi b9 s4 APR 91 oct launch!

2019 Audi b9 s4 APR 91 oct launch!

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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