{"product_id":"apr-strut-tower-brace-b9","title":"APR Strut Tower Brace (B9)","description":"\u003cp\u003e\u003cstrong\u003eAPR Part Number: SUS00027\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eFits Audi A4 17-25, S4 18-25, RS4, A5 17-25, S5 18-25, RS5 18-25\u003c\/p\u003e\u003ch2\u003eOverview\u003c\/h2\u003e\u003cdiv\u003eIntroducing the APR Strut Tower Brace (B9 Chassis - A4\/5, S4\/5, \u0026amp; RS4\/5)\n\nThe APR Strut Tower Brace for the B9 Chassis A4\/5, S4\/5, RS4\/5,  is engineered to enhance chassis rigidity, reduce flex, and improve handling for a more connected driving experience. While many systems prioritize the visual aesthetics of the engine bay, ours is a true performance upgrade designed for real-world handling improvements.\n\nBy 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.\n\nTrue to our motto of Performance Without Compromise, this system provides a stiffer front end without introducing unwanted noise, vibration, or harshness (NVH).\n\nThe APR B9 Strut Tower Brace is the ultimate solution for drivers seeking sharper handling, reduced chassis flex, and a more responsive driving experience—all without sacrificing daily drivability!\u003c\/div\u003e\u003ch3\u003eFeatures:\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eIncreased Chassis Rigidity – Reduces flex under load for improved suspension performance and handling stability.\u003c\/li\u003e\n\u003cli\u003eHigh-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.\u003c\/li\u003e\n\u003cli\u003eFull Strut Tower Integration – Connects both towers and the firewall for superior structural reinforcement.\u003c\/li\u003e\n\u003cli\u003eAdjustable Preload with Turnbuckle – Fine-tune chassis stiffness to optimize handling for different driving conditions.\u003c\/li\u003e\n\u003cli\u003eImproved Steering Feel – Enhances driver feedback and consistency during aggressive driving.\u003c\/li\u003e\n\u003cli\u003eNo Compromise on Comfort – Engineered to prevent additional NVH, maintaining a smooth and refined ride.\u003c\/li\u003e\n\u003cli\u003eDirect Bolt-On Installation – No cutting or permanent modifications required, making installation seamless.\u003c\/li\u003e\n\u003cli\u003eHigh-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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustable\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBar Type\u003c\/th\u003e\n\u003ctd\u003eHollow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\t\u003ctd\u003e\n\t\tAPR\n\t\t\n\t\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eSuspension\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e25 MM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEmission Code\u003c\/th\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003ePowder Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrade Type\u003c\/th\u003e\n\u003ctd\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting Hardware Included\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eSuspension Systems (Braces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSub Category\u003c\/th\u003e\n\u003ctd\u003eSuspension, Springs and Related Components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSuspension Grade Type\u003c\/th\u003e\n\u003ctd\u003ePerformance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWall Thickness\u003c\/th\u003e\n\u003ctd\u003e3 MM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e810065217837\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eSUS00027\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eEmissions\u003c\/h2\u003e\u003cdiv\u003e\u003cspan\u003e5\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003eThis 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.\u003ch2\u003eTech Resources\u003c\/h2\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\t\u003ca href=\"https:\/\/documents.goapr.com\/6ecabf579126e5d73bb6dd9a295e3b5a7d5d76ec.pdf\" title=\"Instructions - tl100201_b9_strut_brace_web.pdf\"\u003e\n\t\t\u003cdiv\u003eInstructions - tl100201_b9_strut_brace_web.pdf\u003c\/div\u003e\n\t\u003c\/a\u003e\n\u003c\/div\u003e\u003ch2\u003eVehicle Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e2018–2019 Audi RS 5 (B9, F5); United States\u003c\/li\u003e\n\u003cli\u003e2021–2024 Audi RS 5 (B9.5, F5); United States\u003c\/li\u003e\n\u003cli\u003e2017–2025 Audi A4 allroad; United States\u003c\/li\u003e\n\u003cli\u003e2018–2025 Audi A5 Sportback; United States\u003c\/li\u003e\n\u003cli\u003e2018–2025 Audi S5 Sportback; United States\u003c\/li\u003e\n\u003cli\u003e2019–2019 Audi RS 5 Sportback; United States\u003c\/li\u003e\n\u003cli\u003e2021–2025 Audi RS 5 Sportback; United States\u003c\/li\u003e\n\u003cli\u003e2018–2020 Audi A5 (B9, F5); United States\u003c\/li\u003e\n\u003cli\u003e2021–2024 Audi A5 (B9.5, F5); United States\u003c\/li\u003e\n\u003cli\u003e2018–2020 Audi S5 (B9, F5); United States\u003c\/li\u003e\n\u003cli\u003e2021–2024 Audi S5 (B9.5, F5); United States\u003c\/li\u003e\n\u003cli\u003e2018–2019 Audi S4 (B9, 8W); United States\u003c\/li\u003e\n\u003cli\u003e2020–2025 Audi S4 (B9.5, 8W); United States\u003c\/li\u003e\n\u003cli\u003e2017–2019 Audi A4 (B9, 8W); United States\u003c\/li\u003e\n\u003cli\u003e2020–2020 Audi A4 (B9.5, 8W); United States\u003c\/li\u003e\n\u003cli\u003e2020–2025 Audi A4 (B9.5, 8W); United States\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment Requirements\u003c\/h3\u003e\u003cp\u003eInstructions - tl100201_b9_strut_brace_web.pdf\u003c\/p\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":42083486990421,"sku":"SUS00027","price":313.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0074\/3702\/5395\/files\/kies-motorsports-apr-apr-strut-tower-brace-b9-1217684957.jpg?v=1769017767","url":"https:\/\/www.kiesmotorsports.com\/products\/apr-strut-tower-brace-b9","provider":"Kies Motorsports","version":"1.0","type":"link"}