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CBK0057 — APR Rear Catback Exhaust System - SQ5 (B9)
APR Part Number: CBK0057
Fits Audi SQ5 18-25
Overview
Introducing the APR Rear Catback Exhaust System for the Audi B9 SQ5
The APR Rear Catback Exhaust System for your Audi B9 SQ5 introduces a deeper and more aggressive growl to your vehicle’s exhaust note. The system is a direct bolt on with your factory exhaust system or can be combined with the APR Midpipe Exhaust System for a more refined and more powerful full catback experience! Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance and elevate sound. Crafted from premium materials and built with advanced manufacturing techniques, this system is will withstand harsh conditions and deliver lasting performance. Expect a bold, aggressive growl at wide-open throttle, along with a gain of 5 AWHP and 6 AWFT-LBS or an impressive gain of 10 AWHP and 12 AWFT-LBS when combined with the APR Midpipe Exhaust System!
Unmatched Design and Precision Engineering
Unlike anything currently available, the APR system starts just after the midpipes but can be combined with our midpipe system to making this a true full-system upgrade. We’ve minimized restrictions with smooth transitions, oversized piping, and a straight-through rear muffler / Helmholtz resonators. Constructed from mandrel-bent T304 stainless steel with a brushed finish and TIG welding throughout, this exhaust system is as durable as it is striking. Installation is hassle-free, thanks to precision-fit brackets, OEM-style slip clamps, and an included upgraded tunnel brace to accommodate the oversized piping.
Inspired by RS Performance
Like the RS4 and RS5, this system features a reengineered exhaust routing design. It utilizes a dual 2.75” (70mm) midpipes merging through a cast Y-junction into a massive 3.5” (91mm) midpipe, replacing the restrictive factory dual-pipe setup. The exhaust valve is fully integrated with the OEM control system, adjusting automatically to enhance sound during aggressive driving while maintaining a quieter profile during cruising. When closed, exhaust gasses route through the rear muffler featuring straight-through sound absorption technology and when open, bypasses the rear muffler all together.
Experience the APR Difference
Designed for enthusiasts seeking the perfect balance of power, sound, and quality, the APR Midback Exhaust System for the Audi SQ5 is a testament to engineering excellence. With its performance-driven design and durable construction, this system not only transforms your driving experience but also ensures years of reliable performance.
Features:
- Plug-and-Play with APR Midpipe System or factory system.
- Performance gains of 5 AWHP and 6 AWFT-LBS of torque on their own or 10 AWHP and 12 AWFT-LBS of torque when combined with the APR Midpipe System.
- Premium T304 stainless steel construction with TIG welding for strength and durability.
- Optimized flow through dual 2.75” midpipes to single 3.5” midpipe exiting through dual 3” downturns.
- Mandrel-bent brushed piping paired with electropolished cast splitters for a refined finish.
- Precision brackets and slip clamps ensure accurate alignment and hassle-free installation.
- Integrated muffler minimizes drone and enhances sound quality.
- Valve-controlled rear muffler dynamically adjust sound based on driving style.
- Smooth transitions and straight-through components maximize performance by reducing restrictions.
- Strikes the perfect balance of power, sound, style, and quality for enthusiasts.
- Fully emissions compliant for worry-free operation.
Specifications
| Brackets |
Precise |
| Brand |
APR
|
| Category |
Exhaust |
| Clamping Type |
Slip Clamp |
| Clamps Included |
Yes |
| Emission Code |
6 |
| Exhaust Tip Quantity |
0 |
| Finish |
Brushed |
| Grade Type |
Performance |
| Hangers Included |
Yes |
| Main Piping Diameter |
2.75 IN |
|
3.00 IN |
|
3.50 IN |
| Material |
T304 Stainless Steel |
| Muffler Finish |
Brushed |
| Muffler Quantity |
1 |
| Muffler Type |
Sound Absorption |
| Pipe Bend Type |
Mandrel |
| Pipe Material |
T304 Stainless Steel |
| Product Type |
Exhausts (Catback Systems) |
| Sub Category |
Exhaust and Tail Pipes |
| System Type |
Catback |
| Tail Pipe Outlet Outside Diameter |
3 IN |
| Tube Connection |
Butt Joint |
| Valve Included |
Yes |
| Valve Type |
OEM |
| Version |
Catback |
| Welding |
TIG |
| UPC |
810009935551 |
| Part Number |
CBK0057 |
Tech Resources
Please note: Fitment excludes vehicles equipped with S Sport Package / Air Suspension
Vehicle Applications
- 2018–2025 Audi SQ5 (FY, MLB-EVO) — 3.0L; Excludes vehicles equipped with S Sport Package / Air Suspension, Cat-Back Dual System; United States
- 2021–2025 Audi SQ5 Sportback — 3.0L; Excludes vehicles equipped with S Sport Package / Air Suspension, Cat-Back Dual System; United States
Fitment Requirements
Please note: Fitment excludes vehicles equipped with S Sport Package / Air Suspension
Instructions - tl100188_sq5_catback_web.pdf Please note: Fitment excludes vehicles equipped with S Sport Package / Air Suspension
VKAPRCBK57MPK9 — APR Full Catback Exhaust System - SQ5 (B9)
APR Part Number: VKAPRCBK57MPK9
Fits Audi SQ5 18-25
Overview
Introducing the APR Catback Exhaust System for the Audi SQ5
The APR Catback Exhaust System for the Audi SQ5 is a complete, high-performance exhaust solution that runs the entire length of the vehicle from the catalyst back. The system is sold in two sections: The front post-catalyst downpipes and midpipes, and the rear catback section. Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance, and elevate sound that's sure to make a statement! Crafted from premium materials and built with advanced manufacturing techniques, this system is designed to withstand harsh conditions and deliver lasting performance. Expect a bold, aggressive growl at wide-open throttle, along with an impressive gain of 10 horsepower and 12 FT-LBS of torque to all four wheels with the full system!
Unmatched Design and Precision Engineering
The APR Midpipe System includes downpipes and midpipes that travel post-catalyst in the engine bay to the underside of the vehicle, eliminating the factory resonators in the process. The APR Rear Catback System starts just after the midpipes but can be combined with our midpipe system to making this a true full-system upgrade. We've minimized restrictions with smooth transitions, oversized piping, and a straight-through muffler. Constructed from mandrel-bent T304 stainless steel with a brushed finish and TIG welding throughout, this exhaust system is as durable as it is striking. Installation is hassle-free, thanks to precision-fit brackets, OEM-style clip clamps, including adapter clamps making both systems compatible with either our systems, or the factory systems.
Inspired by RS Performance
Like the RS4 and RS5, this system features a reengineered exhaust routing design. It utilizes dual 2.5" (63.5mm) downpipes to dual 2.75" (70mm) midpipes pipes merging through a cast Y-junction into a massive 3.5" (91mm) midpipe, replacing the restrictive factory dual-pipe setup. The exhaust valve is fully integrated with the OEM control system, adjusting automatically to enhance sound during aggressive driving while maintaining a quieter profile during cruising. When closed, exhaust gasses route through the rear muffler featuring straight-through sound absorption technology and when open, bypasses the rear muffler all together.
Experience the APR Difference
Designed for enthusiasts seeking the perfect balance of power, sound, style, and quality, the APR Catback Exhaust System for the Audi SQ5 is a testament to engineering excellence. With its performance-driven design and durable construction, this system not only transforms your driving experience but also ensures years of reliable performance.
Features:
- Plug-and-Play with APR and factory system.
- Performance gains of 5 AWHP and 6 AWFT-LBS of torque on each system on their own or 10 AWHP and 12 AWFT-LBS of torque when combined.
- Premium T304 stainless steel construction with TIG welding for strength and durability.
- Optimized flow through dual 2.5” downpipes to 2.75” midpipes to single 3.5” midpipe exiting through dual 3” downturns.
- Mandrel-bent brushed piping paired with electropolished cast splitters for a refined finish.
- Precision brackets and slip clamps ensure accurate alignment and hassle-free installation.
- Integrated muffler minimizes drone and enhances sound quality.
- Valve-controlled rear muffler dynamically adjust sound based on driving style.
- Smooth transitions and straight-through components maximize performance by reducing restrictions.
- Strikes the perfect balance of power, sound, style, and quality for enthusiasts.
- Fully emissions compliant for worry-free operation.
Specifications
| Bending |
Mandrel |
| Brackets |
Precise |
| Brand |
APR
|
| Clamp Style |
Slip Clamp |
| Clamps Included |
Yes |
| Emission Code |
5 |
| Exit Tube Diameter |
3 |
| Material |
T304 Stainless Steel |
| Muffler Finish |
Brushed |
| Muffler Style |
Sound Absorption |
| Product Type |
Exhaust Catback System |
|
Intake Systems |
| Tube Connection |
Butt Joint |
| Tube Diameter |
2.5 IN |
|
2.75 IN |
|
3 |
|
3.5 IN |
| Tube Finish |
Brushed |
| Valve Actuation |
OEM |
| Valves |
Yes |
| Version |
Full System: Midpipes & Catback |
| Welding |
TIG |
| Part Number |
VKAPRCBK57MPK9 |
Emissions
5
This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Tech Resources
Please note: Fitment excludes vehicles equipped with S Sport Package / Air Suspension
Vehicle Applications
- 2018–2025 Audi SQ5 (FY, MLB-EVO) — 3.0L; Excludes vehicles equipped with S Sport Package / Air Suspension, Cat-Back Dual System; United States
Fitment Requirements
Instructions - Install Instructions (Catback) Instructions - Install Instructions (Midpipes) Please note: Fitment excludes vehicles equipped with S Sport Package / Air Suspension