BMW Dual Differential Mount - MMR Performance MMR55-1606

The MMX Performance Dual Differential Mount is engineered to strengthen one of the most critical components of the BMW G8x drivetrain. Designed for the G87 M2, G80/G81 M3, and G82/G83 M4, this precision machined mount uses the factory secondary bush mounting point to improve differential stability under hard acceleration, spirited driving, and track use.

By adding a second support point, the mount increases rigidity, reduces unwanted differential movement, and sharpens driveline response. Installation is OEM fit with no cutting, drilling, or fluid changes required. It bolts directly to the factory differential while retaining the factory sump, and it is fully reversible so owners can return the vehicle to stock at any time.

The mount is compatible with OEM rubber differential bushes (33 31 6 899 168) as well as aftermarket polyurethane or solid bushings. By limiting excess movement of the differential, it also helps to prevent diff and CV seal weeping during high load driving.

Features:

• Uses the factory secondary bush mounting hole for added stability under load
• Requires a differential bushing to complete installation (OEM rubber, polyurethane, or solid options supported)
• Direct OEM fitment with no modification required
• Factory sump retained with no fluid draining necessary
• Fits OEM rubber bush (33 31 6 899 168), polyurethane, or solid bushes
• Reduces differential movement to help prevent diff and CV seal weeping
• Improves tyre traction, stability, and driver feedback
• CNC machined from 6061-T6 billet aluminium for strength and low weight
• Reversible installation so the car can be returned to stock