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    Sale!

    APR APR Catback Exhaust System - S4 / S5 (B9) CBK0012

    Vendor: APR
    SKU: HJQF_CBK0012
    Save $257
    Sale Price $2,049.95 Regular Price $2,306.95
    Fast Fulfillment: In-stock parts typically ship same day or next business day.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    Professional, Enthusiast-Driven Customer Support
    International Shipping Available - Contact Us!
    Payment & Security

    Payments are processed through secure, encrypted payment systems. Your credit card information is transmitted directly to the payment processor and is never stored or accessible by us.

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    Designed for enthusiasts seeking the perfect balance of power, sound, style, and quality, the APR Catback Exhaust System for the Audi B9 S4 and S5 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.


    APR APR Catback Exhaust System - S4 / S5 (B9) CBK0012


    Specifications:

    Brackets Precise
    Brand APR
    Category Exhaust
    Clamping Type Slip Clamp
    1882 Yes
    Emission Code 5
    11205 Polished
    1162 3.5
    1163 Carbon Fiber with Brushed Inlay
    1161 4
    200 Brushed
    9871 2.75
    9871 2.50
    9871 3.50
    9882 Brushed
    1174 Sound Absorption
    1174 Helmholtz
    Pipe Material T304 Stainless Steel
    Product Type Exhausts (Catback Systems)
    Sub Category Exhaust and Tail Pipes
    4369 2.5
    Tube Connection Butt Joint
    6014 Yes
    2126 OEM
    Warning California Proposition 65
    Welding TIG
    Pipe Bend Type Mandrel
    Exhaust Tip Removable Yes
    Description_SHO Exhaust
    Description_INV CATBACK, B9 S4 SEDAN
    Description_DES APR Catback Exhaust System - S4 / S5 (B9)
    Description_EXT Fits Audi S4 18-25, S5 18-25
    Description_MKT Introducing the APR Catback Exhaust System for the Audi B9 S4 and S5
    Description_MKT The APR Catback Exhaust System for the Audi B9 S4 and S5 is a complete, high-performance exhaust solution that runs the entire length of the vehicle from the catalyst back. Inspired by the larger center-pipe design of the higher-output RS4 and RS5 models, this system is engineered to boost performance, elevate sound, and enhance aesthetics with customizable exhaust tips that are 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!
    Description_MKT Unmatched Design and Precision Engineering
    Description_MKT Unlike anything currently available, the APR system includes downpipes extending to the factory catalyst in the upper engine bay, making this a true full-system upgrade. We’ve minimized restrictions with smooth transitions, oversized piping, and straight-through mufflers and 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.
    Description_MKT Inspired by RS Performance
    Description_MKT 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 integrated Helmholtz resonator minimizes drone through a straight-through design with a sound-canceling port, ensuring no compromise in exhaust flow.
    Description_MKT The system splits again via another cast Y into two rear, valve-controlled mufflers with sound absorption technology. These valves are fully integrated with the OEM control system, adjusting automatically to enhance sound during aggressive driving while maintaining a quieter profile during cruising. Finally, exhaust gases exit through dual cast Y-junctions into a quad 2.5” (63.5mm) system, terminating in 3.5” (91mm) lightweight, single-walled motorsport-style tips. The tips feature a polished stainless steel finish and a subtle APR logo for a refined touch.
    Description_MKT Experience the APR Difference
    Description_MKT Designed for enthusiasts seeking the perfect balance of power, sound, style, and quality, the APR Catback Exhaust System for the Audi B9 S4 and S5 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.
    Description_FAB Complete catalyst-back system including downpipes, extending from the factory catalyst back.
    Description_FAB Performance gains of 10 HP and 12 FT-LBS of torque delivered to all four wheels.
    Description_FAB Premium T304 stainless steel construction with TIG welding for strength and durability.
    Description_FAB Optimized flow through dual 2.5” downpipes, 2.75” midpipes, and a 3.5” midpipe.
    Description_FAB Mandrel-bent brushed piping paired with electropolished cast splitters for a refined finish.
    Description_FAB Precision brackets and slip clamps ensure accurate alignment and hassle-free installation.
    Description_FAB Includes an upgraded tunnel brace to accommodate the larger piping.
    Description_FAB Integrated Helmholtz resonator minimizes drone and enhances sound quality.
    Description_FAB Valve-controlled rear mufflers dynamically adjust sound based on driving style.
    Description_FAB Removable quad 3.5” motorsport-style polished tips with APR logo; optional styles available.
    Description_FAB Smooth transitions and straight-through components maximize performance by reducing restrictions.
    Description_FAB Strikes the perfect balance of power, sound, style, and quality for enthusiasts.
    Description_FAB Fully emissions compliant for worry-free operation.


    This Part Fits:

    Year Make Model Submodel Notes
    2018 Audi S4
    2019 Audi S4
    2020 Audi S4
    2021 Audi S4
    2022 Audi S4
    2023 Audi S4
    2024 Audi S4
    2025 Audi S4
    2018 Audi S5
    2019 Audi S5
    2020 Audi S5
    2021 Audi S5
    2022 Audi S5
    2023 Audi S5
    2024 Audi S5
    2018 Audi S5 Sportback
    2019 Audi S5 Sportback
    2020 Audi S5 Sportback
    2021 Audi S5 Sportback
    2022 Audi S5 Sportback
    2023 Audi S5 Sportback
    2024 Audi S5 Sportback
    2025 Audi S5 Sportback
    Shipping Policy

    Shipping Policy Last Updated: April 2026

    We're committed to getting your order to you as quickly and transparently as possible. Here's everything you need to know about how we ship.

    Order Cancellations

    Once an order is placed, cancellations are not guaranteed as orders are sent to fulfillment quickly. If you need to cancel, contact us immediately at sales@berryperformancesales.com. If a cancellation is possible, the buyer is responsible for any transaction fees incurred. If the order has already shipped, it cannot be cancelled and must go through our standard return process.

    Processing Time

    In-stock orders are typically processed and shipped within 1–2 business days of receiving payment, unless otherwise noted on the product page. Orders placed on weekends or holidays will be processed on the next business day.

    Shipping Costs

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    • The item(s) you are interested in ordering

    We will respond with a shipping quote as quickly as possible. Please note that customs duties, import taxes, and any other fees charged upon delivery are the sole responsibility of the recipient and are not included in your shipping quote. We recommend checking with your local customs office before placing your order.

    Off-Road Use Disclaimer

    All products are sold for off-road use only unless otherwise specified. The buyer assumes full responsibility for installation and operation. Berry Performance Sales is not liable for any incidental, indirect, or consequential damages including engine failure, labor charges, or vehicle downtime resulting from the use of any product sold. By placing an order, you acknowledge and accept these terms.

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    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Return Policy

    Returns & Refunds Last Updated: April 2026

    We want you to love what you ordered. If something isn't right, here's everything you need to know.

    30-Day Return Window

    You have 30 days from the date of purchase to initiate a return. After this window, we are unable to accept returns. We do not offer exchanges — all approved returns are refunded per the terms below.

    How to Initiate a Return

    To request a return, contact us at sales@berryperformancesales.com with your order number and reason for return. All returns must be approved by our team before any item is shipped back to us. Once your return has been approved, your item must be shipped within 10 days of approval. Items shipped without prior approval or outside this window will be refused and returned to sender.

    Return Conditions

    To be eligible for a return, items must be:

    • Unused and in original condition
    • In original packaging
    • Inclusive of all parts and accessories

    Custom ordered products are non-returnable. If you're unsure whether your item qualifies, contact us before purchasing.

    Once we receive your return, we will inspect the item before processing any refund. We reserve the right to deny or adjust your refund if the item is received in a condition that differs from what was originally shipped — including signs of use, missing parts, or damage that occurred after delivery.

    Fees to Know Upfront

    We believe in being transparent about costs:

    • Restocking Fee: 20% — deducted from all return refunds
    • Return Shipping: Buyer's responsibility on all standard returns
    • Cancellation (Installment/Payment Plan): 7% fee to cover transaction costs
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    If your item was damaged during shipping, this is handled as a carrier claim separate from our standard return process — we will assist you in filing that claim. Items confirmed to be defective due to a manufacturing or fulfillment error will have return shipping costs covered by Berry Performance Sales.

    Refunds

    Once we receive and inspect your return, refunds are processed within 3–5 business days back to your original payment method. You'll receive a confirmation once it's been issued.

    Questions?

    We're happy to help before, during, or after your purchase. Email: sales@berryperformancesales.com

    Berry Performance Sales reserves the right to update this policy at any time. Changes take effect immediately upon posting. It is the customer's responsibility to review the current policy at the time of purchase.

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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