Our BimmerWorld Precision Front Upper Control Arm Bearing Kit is our preferred thrust arm bushing upgrade because of the huge amount of suspension load that the front upper control arm (aka pull rod or tension strut), takes in an G8X car under braking. With the familiar multi-link front end in the G8X series (similar to the E9X and F8X), the same issues we found in 2006 need to be addressed.
Video: Precision FCAB - A part EVERY G8X needs.
The Problem: In street cars, the rubber bushings in G87 M2, G80 M3, and G82 M4 are big and soft with an open design to allow the joint to rotate in multiple axes, which is required when turning the steering wheel through its range of motion. Unfortunately, this means the bushing is compressing and then releasing and causing the tire to skip across the pavement under braking - a condition worsened once ABS is engaged.
The Solution: Our Precision Front Upper Control Arm Bearing Kit is the slam dunk solution for this problem, utilizing a fully-sealed ball joint (aka “monoball”) to give full multi-axis rotation. Since this is a true OE-quality bearing and fully sealed, this part is perfectly at home even on a performance street car and the durability and performance is perfect even in the extremes of a 24-Hour endurance race car. Adding these parts to your tracked car will make a noticeable improvement in braking and turn-entry grip.
Fits all G8X M2, M3, and M4 models.
Installation Note: the upper control arms must be removed for installation. Thanks to the crash structure in the front, access seems tricky but can be accomplished by any competent DIYer. Removing the OE bushing requires a press. Original nuts and bolts are stretched and must be replaced. All required hardware is included.
Click here for install instructions (pdf).
European-manufactured OEM bearing insert. Kit designed, machined, and assembled in USA.
$329.99Precision Monoball Front Upper Control Arm Bearing Kit - G8X M2 / M3 / M4Dramatically improve the braking and turn-entry performance in your street to full-race BMW
