Powerflex BMW M3/M4 Dual Mount Rear Differential Bracket replaces BMW's factory single bush bracket that promotes excessive wear on the rear subframe-to-diff bush. This design is very flawed as is creates a pivot point for the diff under torque loading. 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
Powerflex has come up with a unique solution! To prevent an unsettled and clunky rear end, they developed this dual-mount rear differential bracket, made from in-house CNC machined 6082 high-tensile aluminium, designed to utilise the secondary mounting position on the OE subframe. The addition of a second bush, prevents the diff from twisting under load.
(See number '30' on diagram)
BENEFITS
- Reduced drivetrain movement - Improved throttle response - A more controlled & consistent on/off throttle chassis response - Reduced wheel hop - Reduced strain on bushes - Corrosion-resistant
