MMX Dual Differential Mount - BMW M2, M3, M4 F8x

Two Positions, One Mount

The MMX Dual Differential Mount (MMR55-1001) is a precision machined addition to the F8x M2, M3 and M4 differential, opening up a second rear mounting point BMW left completely unused from the factory. Run on its own in the OEM position, it adds a genuine second point of support to the diff, tightening up the connection to the chassis and reducing unwanted movement under normal and increased torque loads.

F8x diff mounts are a known weak point on this chassis, prone to tearing and premature failure under hard use. The Dual Differential Mount is a direct answer to that, adding real reinforcement rather than just stiffer rubber in the same single mounting point. It can be run with the factory bushes for a like-for-like fit, or with two of the MMX Rear Diff Mount Bush (MMR55-1603) for a firmer, more connected setup.

Paired with the MMX Front Differential Lift Mount / Cradle (MMR55-1604) and set to Lifted, the same mount raises the differential by 10mm. This corrects the driveshaft geometry that gets thrown out on lowered F8x builds, taking the heat and premature wear off the CV joints and axle shafts that comes with running a lowered ride height.

Product Features

• Precision machined from 6061-T6 billet aluminium.
• Opens up a second rear mounting point BMW left unused from the factory.
• Runs with the factory bushes, or two of the MMX Rear Diff Mount Bush (MMR55-1603) for a firmer setup.
• OEM or +10mm Lifted position set at the mount.
• Reduces drivetrain movement under normal and increased torque loads.
• Direct answer to the diff mount failures common on this chassis.
• Reduces heat build up and premature wear on OEM or aftermarket axle shafts when set to Lifted.
• Direct fit, no modification required, minimal NVH increase.Designed to work with the MMX Front Differential Lift Mount / Cradle (MMR55-1604) for the ultimate, Lifted setup.

Fitting Information

The MMX Dual Differential Mount is a direct fit to the existing F8x differential mounting points, with no modification required. It can be run on its own in the OEM position, or alongside the MMX Front Differential Lift Mount / Cradle in the Lifted position. It's designed for minimal NVH increase.

Part Number: MMR55-1001