Powerflex Rear Diff Rear Mount Bushing - Street - E34 5 Series / E32 7 Series

Product Details

In high-load performance applications, endurance racing, or just looking to upgrade factory compliance on the BMW E34 and E32 chassis, controlling rear drivetrain deflection is paramount. The factory rubber rear differential mount is highly susceptible to rotational fatigue. Under hard acceleration, sequential shifting, and aggressive deceleration, this compliance allows the differential housing to rotate excessively.

This severe movement results in:

• Energy transfer delays to the rear wheels 

• Predictable wheel hop under high load conditions.

• Accelerated wear on CV joints, the center support bearing (CSB), and the driveshaft guibo.

• The chronic, violent drivetrain "thud" typical of worn executive-era BMW chassis.

The Powerflex Street Series is engineered to replace the factory rubber units, significantly reducing axial deflection of the differential carrier within the rear subframe. By isolating unwanted casing rotation, this polyurethane upgrade stabilizes the entire rear drivetrain assembly, ensures immediate power transfer to the rear wheels, and retains the refined ride quality required for mixed road use.

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