Racingline Audi A4/S4 B9 Strut Brace

Racingline Strut Brace – Audi A4/S4 B9 (VWR814100)

Sharpen the handling, tighten the steering and add a real visual lift to your engine bay with the Racingline Strut Brace, engineered specifically for the Audi A4 and S4 (B9 chassis). This is a direct replacement for the thin, pressed aluminium factory brace, swapping it for a solid billet aluminium component that does a far better job of tying the front strut towers together.

The B9 platform already has a stiff bodyshell, but the standard brace offers very little resistance to lateral movement at the front strut towers. Under hard cornering, this allows the towers to flex slightly, which leads to vague steering feel and a front end that doesn’t always go exactly where you point it. The Racingline brace solves this by adding genuine structural rigidity where it’s needed most.

What it does for your car

By stiffening the front end and keeping the strut towers properly located under load, the brace helps maintain correct suspension geometry when cornering hard. The result is a more direct steering response, better front-end feedback and a more connected feel from behind the wheel. It’s a subtle but worthwhile change that you’ll notice most on twisty roads or track days.

Importantly, the added stiffness doesn’t come at the cost of comfort. The brace has been engineered to improve handling without introducing extra noise, vibration or harshness (NVH) into the cabin, so daily driving remains just as refined as before.

Key benefits

• More precise steering response and improved front-end feel
• Reduces lateral flex at the front strut towers under cornering loads
• Machined from solid billet aluminium for genuine rigidity
• No added NVH – ride quality and refinement are preserved
• Simple, fully reversible installation using factory mounting points
• High-quality finish that visually upgrades the engine bay

Built to be seen

As well as doing a serious job underneath, the brace looks the part. The billet construction and clean finish make it a genuine centrepiece in the engine bay, matching the quality you’d expect from a performance Audi.

Fitment

Designed for the Audi A4 and S4 (B9) platform. To make sure this brace is correct for your specific vehicle, please use the site’s vehicle lookup tool or check the Vehicle Fitment tab on this page for full details before ordering.

As an authorised UK dealer for Racingline Performance, Progressive Parts supplies the full Racingline range. Their products are developed through motorsport and refined for real-world road use, giving you upgrades that are tested where it matters before they reach your driveway.

Applications

Please note, customers are wholly responsible for checking fitment for their vehicle.