APR 18-25 Audi A4 Quattro/A5 Quattro/RS5/S4/S5 (B9) Strut Brace Tower

By replacing the factory-stamped aluminum brace with a high-strength tubular chromium-molybdenum alloy steel system, we significantly increase structural support while maintaining ride comfort. Additionally, our cross-brace design links both strut towers, and an integrated turnbuckle allows for precise preload adjustments, further reinforcing the chassis under heavy cornering and acceleration. Fits Audi A4 17-25, S4 18-25, RS4, A5 17-25, S5 18-25, RS5 18-25

• High-Strength Tubular Cr-Mo Alloy Steel Construction –  Stronger than the factory-stamped aluminum brace for maximum strength and durability, featuring a black powder-coated finish for superior corrosion resistance and lasting performance.
• High-Quality Materials – Constructed from durable 25mm OD / 19mm ID high-strength tubular chromium-molybdenum alloy steel with billet end caps, TIG welding, black powder coating, and all stainless steel hardware.
• Adjustable Preload with Turnbuckle – Fine-tune chassis stiffness to optimize handling for different driving conditions.
• Increased Chassis Rigidity – Reduces flex under load for improved suspension performance and handling stability.
• Direct Bolt-On Installation – No cutting or permanent modifications required, making installation seamless.
• Full Strut Tower Integration – Connects both towers and the firewall for superior structural reinforcement.
• No Compromise on Comfort – Engineered to prevent additional NVH, maintaining a smooth and refined ride.
• Improved Steering Feel – Enhances driver feedback and consistency during aggressive driving.

Upgrade chassis support with the APR aprSUS00027 Strut Tower Brace, engineered for select Audi B9 platform vehicles. Replacing the factory-stamped aluminum brace with a high-strength tubular chromium-molybdenum alloy steel system, this cross-brace design links both strut towers and the firewall to help reduce chassis flex during hard cornering, acceleration, and demanding driving. The integrated turnbuckle allows precise preload adjustment, helping you fine-tune chassis stiffness for different driving conditions while maintaining a composed and comfortable ride.
Constructed from durable tubular chromium-molybdenum alloy steel with billet end caps, TIG-welded joints, a black powder-coated finish, and stainless steel hardware, the APR aprSUS00027 is built for long-term strength and corrosion resistance. Its full strut tower integration supports improved suspension performance, steering response, and driver feedback without introducing unnecessary noise, vibration, or harshness. The result is a more consistent and confident driving experience while preserving the refined character expected from an Audi.
This APR strut brace is designed for direct bolt-on installation with no cutting or permanent modifications required. It fits select 2017-2025 Audi A4 and A5 models, 2018-2025 Audi S4 and S5 models, and Audi RS4 and RS5 applications. Verify vehicle year, model, trim, and chassis compatibility before installation. Professional installation is recommended to ensure proper fitment and preload adjustment.

Features:

• High-Strength Tubular Cr-Mo Alloy Steel Construction: Provides greater structural support than the factory-stamped aluminum brace and includes a black powder-coated finish for corrosion resistance.

• Durable Materials: Uses tubular chromium-molybdenum alloy steel, billet end caps, TIG-welded construction, and stainless steel hardware.

• Adjustable Preload with Turnbuckle: Allows precise chassis stiffness adjustments for varied driving conditions.

• Increased Chassis Rigidity: Helps reduce flex under load for improved handling stability and suspension performance.

• Direct Bolt-On Installation: Installs without cutting or permanent vehicle modifications.

• Full Strut Tower Integration: Connects both strut towers and the firewall for enhanced structural reinforcement.

• Comfort-Focused Design: Helps maintain a smooth, refined ride without adding unnecessary NVH.

• Improved Steering Feel: Enhances driver feedback and consistency during spirited or aggressive driving.

• Vehicle Compatibility: Fits select 2017-2025 Audi A4 and A5 models, 2018-2025 Audi S4 and S5 models, plus Audi RS4 and RS5 applications.

Fitment:
Audi A4 Premium 2017
Audi A4 Premium 2018
Audi A4 Premium 2019
Audi A4 Premium 2020
Audi A4 Premium Plus 2017
Audi A4 Premium Plus 2018
Audi A4 Premium Plus 2019
Audi A4 Premium Plus 2020
Audi A4 Prestige 2017
Audi A4 Prestige 2018
Audi A4 Prestige 2019
Audi A4 Prestige 2020
Audi A4 Titanium 2019
Audi A4 allroad Premium 2017
Audi A4 allroad Premium 2018
Audi A4 allroad Premium 2019
Audi A4 allroad Premium 2020
Audi A4 allroad Premium 2021
Audi A4 allroad Premium 2022
Audi A4 allroad Premium 2023
Audi A4 allroad Premium 2024
Audi A4 allroad Premium 2025
Audi A4 allroad Premium Plus 2017
Audi A4 allroad Premium Plus 2018
Audi A4 allroad Premium Plus 2019
Audi A4 allroad Premium Plus 2020
Audi A4 allroad Premium Plus 2021
Audi A4 allroad Premium Plus 2022
Audi A4 allroad Premium Plus 2023
Audi A4 allroad Premium Plus 2024
Audi A4 allroad Premium Plus 2025
Audi A4 allroad Prestige 2017
Audi A4 allroad Prestige 2018
Audi A4 allroad Prestige 2019
Audi A4 allroad Prestige 2020
Audi A4 allroad Prestige 2021
Audi A4 allroad Prestige 2022
Audi A4 allroad Prestige 2023
Audi A4 allroad Prestige 2024
Audi A4 allroad Prestige 2025
Audi A4 Quattro Premium 2017
Audi A4 Quattro Premium 2018
Audi A4 Quattro Premium 2019
Audi A4 Quattro Premium 2020
Audi A4 Quattro Premium 2021
Audi A4 Quattro Premium 2022
Audi A4 Quattro Premium 2023
Audi A4 Quattro Premium 2024
Audi A4 Quattro Premium 2025
Audi A4 Quattro Premium Plus 2017
Audi A4 Quattro Premium Plus 2018
Audi A4 Quattro Premium Plus 2019
Audi A4 Quattro Premium Plus 2020
Audi A4 Quattro Premium Plus 2021
Audi A4 Quattro Premium Plus 2022
Audi A4 Quattro Premium Plus 2023
Audi A4 Quattro Premium Plus 2024
Audi A4 Quattro Premium Plus 2025
Audi A4 Quattro Prestige 2017
Audi A4 Quattro Prestige 2018
Audi A4 Quattro Prestige 2019
Audi A4 Quattro Prestige 2020
Audi A4 Quattro Prestige 2021
Audi A4 Quattro Prestige 2022
Audi A4 Quattro Prestige 2023
Audi A4 Quattro Prestige 2024
Audi A4 Quattro Prestige 2025
Audi A4 Quattro Ultra sport 2019
Audi A4 Quattro Ultra sport 2020
Audi A5 Quattro Premium 2018
Audi A5 Quattro Premium 2019
Audi A5 Quattro Premium 2020
Audi A5 Quattro Premium 2021
Audi A5 Quattro Premium 2022
Audi A5 Quattro Premium 2023
Audi A5 Quattro Premium 2024
Audi A5 Quattro Premium Plus 2018
Audi A5 Quattro Premium Plus 2019
Audi A5 Quattro Premium Plus 2020
Audi A5 Quattro Premium Plus 2021
Audi A5 Quattro Premium Plus 2022
Audi A5 Quattro Premium Plus 2023
Audi A5 Quattro Premium Plus 2024
Audi A5 Quattro Prestige 2018
Audi A5 Quattro Prestige 2019
Audi A5 Quattro Prestige 2020
Audi A5 Quattro Prestige 2021
Audi A5 Quattro Prestige 2022
Audi A5 Quattro Prestige 2023
Audi A5 Quattro Prestige 2024
Audi A5 Sportback Premium 2018
Audi A5 Sportback Premium 2019
Audi A5 Sportback Premium 2020
Audi A5 Sportback Premium 2021
Audi A5 Sportback Premium 2022
Audi A5 Sportback Premium 2023
Audi A5 Sportback Premium 2024
Audi A5 Sportback Premium 2025
Audi A5 Sportback Premium Plus 2018
Audi A5 Sportback Premium Plus 2019
Audi A5 Sportback Premium Plus 2020
Audi A5 Sportback Premium Plus 2021
Audi A5 Sportback Premium Plus 2022
Audi A5 Sportback Premium Plus 2023
Audi A5 Sportback Premium Plus 2024
Audi A5 Sportback Premium Plus 2025
Audi A5 Sportback Prestige 2018
Audi A5 Sportback Prestige 2019
Audi A5 Sportback Prestige 2020
Audi A5 Sportback Prestige 2021
Audi A5 Sportback Prestige 2022
Audi A5 Sportback Prestige 2023
Audi A5 Sportback Prestige 2024
Audi RS5 Base 2018
Audi RS5 Base 2019
Audi RS5 Base 2021
Audi RS5 Base 2022
Audi RS5 Base 2023
Audi RS5 Base 2024
Audi RS5 Sportback Base 2019
Audi RS5 Sportback Base 2021
Audi RS5 Sportback Base 2022
Audi RS5 Sportback Base 2023
Audi RS5 Sportback Base 2024
Audi RS5 Sportback Base 2025
Audi S4 Premium 2019
Audi S4 Premium 2020
Audi S4 Premium 2021
Audi S4 Premium 2022
Audi S4 Premium 2023
Audi S4 Premium 2024
Audi S4 Premium 2025
Audi S4 Premium Plus 2018
Audi S4 Premium Plus 2019
Audi S4 Premium Plus 2020
Audi S4 Premium Plus 2021
Audi S4 Premium Plus 2022
Audi S4 Premium Plus 2023
Audi S4 Premium Plus 2024
Audi S4 Premium Plus 2025
Audi S4 Prestige 2018
Audi S4 Prestige 2019
Audi S4 Prestige 2020
Audi S4 Prestige 2021
Audi S4 Prestige 2022
Audi S4 Prestige 2023
Audi S4 Prestige 2024
Audi S4 Prestige 2025
Audi S5 Premium 2019
Audi S5 Premium 2020
Audi S5 Premium 2021
Audi S5 Premium 2022
Audi S5 Premium 2023
Audi S5 Premium 2024
Audi S5 Premium Plus 2018
Audi S5 Premium Plus 2019
Audi S5 Premium Plus 2020
Audi S5 Premium Plus 2021
Audi S5 Premium Plus 2022
Audi S5 Premium Plus 2023
Audi S5 Premium Plus 2024
Audi S5 Prestige 2018
Audi S5 Prestige 2019
Audi S5 Prestige 2020
Audi S5 Prestige 2021
Audi S5 Prestige 2022
Audi S5 Prestige 2023
Audi S5 Prestige 2024
Audi S5 Sportback Premium 2020
Audi S5 Sportback Premium 2021
Audi S5 Sportback Premium 2022
Audi S5 Sportback Premium 2023
Audi S5 Sportback Premium 2024
Audi S5 Sportback Premium 2025
Audi S5 Sportback Premium Plus 2018
Audi S5 Sportback Premium Plus 2019
Audi S5 Sportback Premium Plus 2020
Audi S5 Sportback Premium Plus 2021
Audi S5 Sportback Premium Plus 2022
Audi S5 Sportback Premium Plus 2023
Audi S5 Sportback Premium Plus 2024
Audi S5 Sportback Premium Plus 2025
Audi S5 Sportback Prestige 2018
Audi S5 Sportback Prestige 2019
Audi S5 Sportback Prestige 2020
Audi S5 Sportback Prestige 2021
Audi S5 Sportback Prestige 2022
Audi S5 Sportback Prestige 2023
Audi S5 Sportback Prestige 2024
Audi S5 Sportback Prestige 2025