Front left and right thrust arms with our monoball bearings pre-installed!
Our BimmerWorld Precision Front Upper Control Arm Bearing Kit was designed because of the huge amount of suspension load that the front upper control arm, or thrust arm, takes in an E82, E90, E91, E92, and E93 RWD car under braking. In street cars, the rubber bushings in both the M3, non-M RWD models, and Z4 cars 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. Factor in worn rubber parts and the problem compounds itself.
Our Precision Front Upper Control Arm Bearing Kit is the slam dunk solution for this problem. Utilizing a fully-sealed bearing, similar to the factory monoball bushings in other suspension points, gives 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 street or track car will make a noticeable improvement in braking and turn-entry grip.
We use M3 front thrust arms from an OEM supplier to BMW for control arms and other suspension components. There is no change to the alignment with the M3 upper control arms (see below for M3 Wishbones that add negative camber). As the OEM they meet all of BMW's original design, fitment, and performance requirements. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag.
BMW Fitments:
1 Series
E82 / E88 (07-13) > 128i
E82 / E88 (07-13) > 135i
E82 / E88 (11-13) > 135is
3 Series
E90 / E91 / E92 / E93 (2006) > 325i
E90 / E91 / E92 / E93 (07-13) > 328i
E90 / E91 / E92 / E93 (2006) > 330i
E90 / E92 / E93 (09-13) > 335d
E90 / E92 / E93 (07-13) > 335i
E92 / E93 (11-13) > 335is
Z Series
E89 (09-14) > Z4 sDrive28i
E89 (09-14) > Z4 sDrive30i
E89 (09-14) > Z4 sDrive35i
E89 (09-14) > Z4 sDrive35is
