MMX Performance Front Control Arm Spherical Bearings F8X M2 M3 M4

The MMX Performance Front Control Arm Spherical Bearings replace the OEM rubber control arm bushings on F8X-chassis BMWs with a CNC-machined housing and motorsport-grade spherical bearing. The result is a front end that stops deflecting under hard braking, turn-in, and lateral cornering loads, the way the F8X chassis was meant to feel before time and heat softened the factory rubber.

Each housing is machined from anodized 7075 aluminum and paired with stainless steel spacers and a high-strength spherical (uniball) bearing. The bearing eliminates the rotational and angular play inherent in rubber bushings, holding front toe and camber stable under repeated braking events. A 3D-printed press tool is included in the kit to support the bearing through installation and prevent damage during the press operation.

On the road the result is sharper turn-in and a clearer line of communication between the steering wheel and the front contact patch. On track, the benefit is more pronounced, front toe stays stable through trail-braking and corner entry, tire temperatures even out, and the chassis stops fighting the driver mid-corner. This is the same bearing assembly used on N55-engined F87 M2 and S55-engined M2 Competition, M2 CS, F80 M3, and F82/F83 M4, one part across the F8X family.

For F8X owners chasing a sharper, more predictable front end without changing control arm geometry, this is the foundation upgrade.

Product Details

• CNC-machined anodized 7075 aluminum bearing housing
• High-strength spherical bearing (uniball-style)
• Stainless steel spacers included
• Direct replacement for OEM F8X front control arm rubber bushings
• Sold in pairs (left + right)
• SKU: MMR45-1001

What's Included

• 1x pair of front control arm spherical bearing assemblies
• Stainless steel spacers
• 3D-printed press tool for safe installation

Notes

• Sold in pairs: covers both sides of the front axle.
• OEM control arm bolts are reused on installation.
• Press-fit installation. Hydraulic or fly press required; professional fitting recommended.
• Includes a 1-year manufacturer warranty against defects in materials and workmanship
• Designed and tested in the United Kingdom