Description
This is a set item to convert all rubber mounts on both ends of the rear suspension arms to mono ball bearings.
Note: Some parts may be equipped with mono ball bearings even when the original BMW parts use ball bearings.
For vehicles before the E46-M3, please purchase from the individual item page.
Materials:
Mount housing: Stainless steel (SUS303); Arm rod: Aluminum/Tuffram surface finish.
Driving stability and maneuverability: Tires achieve cornering force by maintaining optimal contact with the road surface. To achieve this, we replaced the rubber mounts on both ends of the arm, which act as the fulcrum for suspension movement, with mono ball bearings to prevent misalignment. This allows the tire to maintain stable, optimal contact with the road surface, even when subjected to large lateral G forces or heavy traction during cornering, improving cornering force.
Resistance reduction: Because suspension arms move via torsion from the rubber mounts, they experience significant friction. This limits the shock absorber's damping range, making it difficult to balance anti-roll and road compliance, limiting cornering force. Switching to mono ball bearing mounts minimizes friction, widening the shock absorber's damping range and improving anti-roll and tire compliance.
Durability: To improve durability, we use mono ball bearings with the largest diameter possible. This contributes not only to cornering force but also to durability and reduced noise. The corrosion-resistant mount housing is made of highly corrosion-resistant stainless steel.
Rear Adjustable Arm: The adjustable arm is mainly used to widen the alignment adjustment range. Monoball bearings are used in the joints and are included in the suspension mount set.
Install as a set! Having monoball bearings on all suspension mounts improves performance. If only some of them are used, input will be concentrated in weak points, disrupting suspension movement and reducing performance.
Note:
Product installation may require specialized knowledge and skills, so please have it installed at an experienced factory