MMX BMW Rear Camber Arm Bearing Pair For G8X & F8X M2, M3 & M4

The MMX Rear Camber Arm Bearing Pair replaces the factory rubber bush in the rear camber arm of the BMW G8X and F8X M2, M3 and M4 with a machined 6061-T6 aluminium pillow bush. The change removes the deflection that lets rear camber wander under load, giving consistent geometry, sharper chassis response and more even tyre wear.

Deflection Is The Problem

A rubber bush is a compromise: it isolates road noise, but it also moves. Under cornering and braking loads the rear camber arm bush deflects, and the camber angle the car runs at is no longer the angle set on the alignment rack. The car feels vague at the limit and wears the inside or outside shoulder of a rear tyre unevenly.

A Machined Pillow Bush Instead

The MMX bearing removes that compliance entirely. Rear camber stays where it was set, whatever the load, so the rear axle behaves predictably and grip builds in a way the driver can read. Tyre contact patch is maintained through the corner rather than shifting, which is where the reduction in wear comes from.

An OEM-Fit Upgrade

The bearing is designed to fit the standard camber arm as a direct replacement for the factory bush, so no new arms are required. That makes it one of the more cost-effective ways to remove rear axle compliance on a G8X or F8X, and it suits road and track use equally.

Key Features

• Machined 6061-T6 aluminium pillow bush design
• Eliminates the deflection of the OEM rubber bush
• Holds rear camber consistent under load
• Sharper chassis response and clearer feedback
• Reduces uneven rear tyre wear
• Direct OEM-fit into the standard camber arm
• Supplied as a pair

Specifications

• Part Number: MMR55-1651
• Material: 6061-T6 aluminium
• Type: Pillow bush
• Sold As: Pair

Compatibility

• BMW G80 M3, G81 M3 Touring, G82/G83 M4 and G87 M2
• BMW F80 M3, F82/F83 M4 and F87 M2 including Competition

Frequently Asked Questions

Is an alignment needed afterwards?
Yes. Any change to a suspension bush requires a four-wheel alignment to reset the geometry correctly.

Will cabin noise increase?
A pillow bush transmits more road noise than rubber. On a car driven hard this is the accepted trade-off for consistent geometry.

Are new camber arms required?
No. The bearing fits the standard arm as a direct replacement for the factory bush.

Why Choose MMX Bearings?

Removing compliance from the rear axle is the change that makes a G8X or F8X feel deliberate rather than approximate. MMX does it with machined aluminium at the bush rather than asking for a full arm replacement. R44 Performance supplies the full MMX suspension range.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

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