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APR Catback Exhaust System for Audi RS4 RS5 B9 (2018-2025) T304 Stainless Steel - CBK0037

APR Catback Exhaust System - CBK0037 for Audi B9 RS4 and RS5

The APR Catback Exhaust System, designated as CBK0037, is a meticulously engineered performance exhaust designed specifically for the Audi B9 RS4 (2018-2025) and RS5 (2018-2019, 2021-2025). This complete catalyst-back system runs from the factory catalyst all the way to the rear, enhancing both performance and sound while maintaining the aesthetic appeal expected from RS models.

Key Features

  • Complete catalyst-back system, including downpipes, extending from the factory catalyst back.
  • Performance gains of 9 horsepower and 15 ft-lbs of torque delivered to all four wheels.
  • Constructed from premium T304 stainless steel, featuring TIG welding for enhanced strength and durability.
  • Optimized exhaust flow with dual 2.75" downpipes, a 3.5" midpipe, and quad 2.5" exits.
  • Mandrel-bent brushed piping, paired with electropolished cast splitters for a refined finish.
  • Precision-fit brackets and OEM-style slip clamps ensure accurate alignment and straightforward installation.
  • Includes an upgraded tunnel brace to accommodate the larger piping.
  • Integrated Helmholtz resonator minimizes drone while enhancing sound quality.
  • Valve-controlled rear mufflers dynamically adjust sound based on driving conditions.
  • Dual 7.25"x5" RS-style diamond black oval tips featuring the APR logo for a sophisticated touch.
  • Smooth transitions and straight-through design maximize performance by reducing restrictions.
  • Fully emissions compliant, ensuring worry-free operation.

Specifications

  • Bending: Mandrel
  • Brackets: Precise
  • Brand: APR
  • Category: Exhaust
  • Clamp Style: Slip Clamp
  • Clamps Included: Yes
  • Emission Code: 5
  • Exit Tube Diameter: 2.5 inches
  • Material: T304 Stainless Steel
  • Muffler Finish: Brushed
  • Muffler Style: Sound Absorption, Helmholtz
  • Product Type: Exhaust Catback System
  • Sub Category: Exhaust and Tail Pipes
  • Tip Count: 2
  • Tip Diameter: 7.25"x5"
  • Tip Style: RS-Style Oval
  • Tube Connection: Butt Joint
  • Tube Diameter: 3.5 inches
  • Tube Diameter: 2.75 inches
  • Tube Finish: Brushed
  • Valve Actuation: OEM
  • Valves: Yes
  • Welding: TIG

Compatibility

This system is confirmed to fit the following models:

  • Audi RS4 (2018-2025)
  • Audi RS5 (2018-2019, 2021-2025)

With its robust construction and innovative design, the APR Catback Exhaust System for Audi B9 RS4 and RS5 not only enhances performance but also delivers an aggressive sound profile, making it a top choice for performance-focused drivers.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2018-2019, 2021-2025
 Audi RS5
Who is APR?

APR is a company that was founded in 1997 and specialized in providing high-performance parts for the automotive industry. They cater to various automotive platforms such as Audi, Seat, Skoda, Volkswagen, Porsche, and more. Today, they are considered the global leader when it comes to aftermarket performance parts.

Wide Range Of Products

APR develops and produces a wide range of products from software, hardware, data logging, calibration tools, intake components, exhaust systems, transmission controllers, turbochargers, intercoolers, wheels, suspension parts, brake systems, and more.

Meeting Customers Demands

The demand for their products has grown over the years. But even so, they can accommodate everyone by using their 80,000 square foot facility located in Opelika, Alabam. This facility houses state-of-the-art manufacturing equipment that allows them to create some of the best products in the market.

Quality Products

Each part is carefully designed and cut with precision to ensure that it fits perfectly on the vehicle. The company caters to some of the best automotive brands globally, so it is just that they create parts that are par with it in terms of quality and performance.

Purchase APR Products At Vivid Racing

If you are in the market for high-quality performance parts for your vehicle, then APR is the brand for you. They have been in the automotive business for more than 20 years and have given their customers the products they duly deserve. To know more about APR and what they can offer, visit Vivid Racing and check out their list of parts that would fit your specific needs.

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