Exhaust› Exhaust Pipes, Systems and Components

APR Tuning

Rear Catback Exhaust System SQ5 (B9) Fits Audi SQ5 18-25 APR

$1,816.06

SKU: A0CU CBK0057

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 Rear Catback Exhaust System for the Audi B9 SQ5 delivers a deeper, more aggressive exhaust note. It is a direct bolt-on replacement for the factory exhaust and can be combined with the APR Midpipe for a full catback upgrade. Inspired by Audi RS4/RS5 exhaust designs, it features dual 2.75" (70mm) midpipes merging into a 3.5" (91mm) main midpipe. Constructed from mandrel-bent T304 stainless steel with a brushed finish and TIG welding. The system incorporates an exhaust valve that integrates with the OEM control system, providing aggressive sound during spirited driving and a quieter profile at cruise. When closed, exhaust gases pass through a sound-absorbing rear muffler; when open, the muffler is bypassed. Includes precision-fit brackets, OEM-style slip clamps, and an upgraded tunnel brace.

Fitment

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Specifications

BrandAPR Tuning
Part NumberA0CU CBK0057

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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