Cowbell clunk noise from your BMW? Fix it with this.

Keep hearing that cowbell ding in your BMW when you slowly start to press the gas from a stop? The ECS Tuning Center Support Bearing Brace is designed to enhance the performance and longevity of your drivetrain. To improve upon the factory design, and to create a performance alternative, our engineers started by designing a set of exact-fit, split polyurethane bushings that clamp around your existing driveshaft bearing. Crafted from 30A durometer polyurethane, our material choice effectively eliminates bushing deflection without causing an increase in noise, vibration, and harshness.

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Fits BMW E9X, F3X, F8X models including BMW E90 M3, BMW E92 M3, BMW E93 M3, BMW F80 M3, BMW F82 M4, BMW F83 M4 and F3X.

The factory center support carrier features an internal bushing constructed from soft, pliable rubber. While this provides a smooth and quiet ride for standard driving, it falls short in performance-oriented applications where durability and precision are critical. During acceleration, shifting, and under load, the rubber bushing’s inherent flexibility allows for excessive driveshaft movement. Over time, repeated stress and wear on the rubber will cause bushing failure, risking poor driveshaft alignment and efficiency. In extreme cases, this failure will cause a constant rotational “clunking” noise, a clear indicator of impending failure.

The ECS Tuning Center Support Bearing Brace is designed to enhance the performance and longevity of your drivetrain. To improve upon the factory design, and to create a performance alternative, our engineers started by designing a set of exact-fit, split polyurethane bushings that clamp around your existing driveshaft bearing. Crafted from 90A durometer polyurethane, our material choice effectively eliminates bushing deflection without causing an increase in noise, vibration, and harshness. By eliminating deflection, this design ensures a longer lifespan than the stock center support bearing, making it a great investment for enthusiasts looking to maintain their aging BMW chassis.

The polyurethane bushings are encased in a high-strength 6061-T6 billet aluminum bracket, engineered for both durability and performance. Like the bushings, the bracket features a split design, allowing for seamless installation without the need to remove the entire driveshaft assembly, saving time and effort during maintenance or upgrades. To ensure reliable clamping and secure fastening, the bracket is equipped with two corrosion-resistant stainless steel socket head screws. This design simplifies bushing replacement and provides a dependable and sturdy hold, even under high torque and stress conditions.

FEATURES

• Exact-fit bushings are made from 90A durometer polyurethane to eliminate bushing deflection while maintaining a smooth, quiet ride.
• Polyurethane construction offers a longer lifespan than factory rubber, ideal for enthusiasts looking to eliminate future CSB-related problems.
• Bushings are encased in a 6061-T6 billet aluminum bracket for enhanced durability and improved performance.
• Both the bushings and the bracket feature a two-piece split design, allowing for seamless installation without driveshaft removal.
• Designed with performance in mind, this upgrade eliminates excessive driveshaft movement for improved alignment and efficiency.

KIT CONTENTS

• ECS Driveshaft Center Support Bushings
• ECS Driveshaft Center Support Carrier
• (2) Stainless Steel Hex Head Screws
• (2) Flange Nuts (26117574872)
• Medium Strength Threadlocker (0.5ml)

PRODUCT DEVELOPMENT

Our ECS Driveshaft Center Support Carrier was designed, engineered, tested, and quality inspected by our Research and Development team in our Wadsworth, Ohio facility. We strive for the highest level of precision and quality through leading-edge product development technology including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

INSTALLATION & SUPPORT

Need installation tips? We put together a full installation tutorial from start to finish including how to remove your OEM parts in detail! See our Installation PDF under the INSTALLATION Tab for more information.