Powerflex Dual Mount Differential Bracket BMW F8X M2, M3, M4 Competition
With the newer F8X M2/M3/M4's making big power and having superb chassis straight from the factory, it's no wonder they're often found at most track-days or at tuning shops across the globe.
Despite having the provision for two mounting bushes on the factory tubular subframe, BMW opts to use only a single offset bush to mount the diff bracket to the subframe. This essentially creates a pivot point for the diff under torque loading, especially if the 4x front diff bushes are worn. With hard launch starts and sudden and frequent on-off throttle changes, this puts the single rear OE rubber bush through extreme torsional and directional forces, resulting in accelerated ageing with failure often seen at around the 30-40,000 mile mark and an unsettled and potentially clunky rear-end.
Powerflex are proud to release a high-performance solution to this problem, giving you the tools to re-establish rear-end stability on your F8X M2/M3/M4.The Dual Mount Diff Bracket is made from CNC machined 6082 High-Tensile Aluminium and is designed to utilise the secondary mounting position on the OE subframe. With the addition of a second bush, this prevents the diff from twisting under load, providing benefits such as:
Reduced drivetrain movement
Improved throttle response
Controlled and consistent on-off throttle chassis response
Reduced wheel hop
Reduced strain on fitted bushes
The corrosion-resistant Satin Black Anodised Aluminium Bracket is optimised for high stress and deflection whilst withstanding high torque loads but is designed to function equally on standard or modified vehicles with either a single OE bush or dual aftermarket bushes.
We would recommend combining the bracket with the popular Powerflex Rear Diff Mounting Bush, available in Purple or Black (stiffer) click here.
Supplied complete with M14 bolt and thread locker.
This bracket replaces BMW part number: 33172284775
Powerflex part number: PFR5-4030
Diagram reference: 30