PowerFLex Rear Diff Front Mount Bushing - Spigot Type - E39, E38, E52 - M54, M52, M60, M62, S62, M73

Product Details

In high-performance and competitive driving environments, drivetrain deflection is the enemy of power delivery. The factory rubber rear differential bushings on the BMW E39 chassis are notorious compliance points; under load, they flex excessively, leading to wheel hop, delayed throttle response, and accelerated wear on cv-joints and driveshafts.

The Powerflex Heritage Series Bushing delivers a motorsport-grade engineering solution tailored for the track, wrapped in a classic aesthetic. This front differential mount eliminates unwanted drivetrain rotation, ensuring instantaneous torque transfer to the rear wheels.

As part of the exclusive Heritage Collection, this component features Powerflex’s advanced polyurethane formulation but is finished in a subtle dark grey. This allows race teams, restoration shops, and purists to maintain a clean, factory-correct OEM appearance while unleashing true track-ready performance.

Key Technical Features

• Spigot-Specific Casting Geometry: Specifically engineered with a hollowed flange to precisely interface with E39 differential housings featuring a cast-in spigot (Type B).

• Optimized Durometer Polyurethane: Engineered to drastically reduce differential twist and deflection under hard acceleration and aggressive downshifts, without introducing the brutal, cabin-rattling NVH (Noise, Vibration, Harshness) of a solid metal mount.

• Sharper Throttle Response: Eliminates the "wind-up" effect of aging rubber. By securing the differential nose, power is delivered directly to the tarmac with zero hesitation.

• Elite Durability: Powerflex’s proprietary compound resists degradation from road salt, oils, fluids, and ozone—outlasting standard rubber variants multiple times over.

• Classic Styling: Dark grey colorway offers a stealth aesthetic for strict class regulations or OEM+ builds.

Note: See Potos, Only Compatible with Spigot type B Flange, for Flat type A see PFR5-524H~PFX

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