APR's rear cat-back section for the B9 SQ5 is built from T304 stainless steel with mandrel-bent brushed piping, electropolished cast splitters and TIG welding throughout. Flow runs from dual 2.75 in midpipes into a single 3.5 in center pipe, a layout taken from the higher output RS4 and RS5, before splitting into dual 3 in downturns. A valve-controlled rear muffler adjusts the note to driving style and an integrated muffler section holds drone down. APR rates the system at 5 AWHP and 6 AWFT-LBS on its own, or 10 AWHP and 12 AWFT-LBS when it is run with the APR Midpipe Exhaust System. Precision brackets and slip clamps handle alignment, it bolts to the factory exhaust, and it is emissions compliant.
Specifications
| Type | Rear cat-back exhaust section with valve-controlled muffler |
| Position | Rear |
| Material | T304 stainless steel, mandrel bent, TIG welded |
| Finish | Brushed piping with electropolished cast splitters |
| Size | Dual 2.75 in midpipes to a single 3.5 in pipe, exiting through dual 3 in downturns |
| Power Gain | 5 AWHP and 6 AWFT-LBS; 10 AWHP and 12 AWFT-LBS with the APR Midpipe Exhaust System |
| Pairs With | APR Midpipe Exhaust System, or the factory exhaust system |
| Emissions | Fully emissions compliant |
| Quantity | 1 system |
| Part Number | CBK0057 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2019-2025 | Audi | SQ5 | Premium |
| 2018-2025 | Audi | SQ5 | Premium Plus |
| 2018-2025 | Audi | SQ5 | Prestige |
| 2021-2025 | Audi | SQ5 Sportback | Premium |
| 2021-2025 | Audi | SQ5 Sportback | Premium Plus |
| 2021-2025 | Audi | SQ5 Sportback | Prestige |
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
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Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
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- Product images may be representative. The SKU and specifications in the listing are what ships.
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Full details: Shipping Policy · Returns & Refunds · Warranty