PFR5-4025BLK – Rear Diff Front Mounting Bush – M2 M3 M4 (F8X)

The Powerflex PFR5-4025BLK Rear Diff Front Mounting Bush is a high-performance polyurethane upgrade engineered specifically for the BMW M2, M3 and M4 (F8X). As part of Powerflex’s motorsport-focused Black Series range, this bush dramatically reduces differential movement, improving drivetrain stability, throttle response and rear-end control under hard acceleration.

SKU: PFR5-4025BLK
OEM Reference: 33172284774

Key Features

Black Series Polyurethane Construction

– Significantly stiffer than OEM rubber
– Designed for track, drift and high-power applications
– Minimises diff movement under load

Sharper Drivetrain Response

– Faster throttle pickup
– Reduced wheel hop and diff shift
– More consistent torque transfer to the rear wheels

Improved Rear-End Stability

– Reduces unwanted flex during gear changes
– Keeps differential properly aligned under heavy acceleration
– Increases precision and control during performance driving

Long-Lasting Performance

– Resistant to oil, fuel and heat
– Outlasts rubber bushes
– Maintains geometry even in extreme conditions

Benefits

Upgrading to the PFR5-4025BLK bush transforms rear-end stability on the F8X platform. By restricting differential movement, the car feels more direct, more predictable and more capable under aggressive throttle inputs — ideal for tuned or hard-driven M2/M3/M4 models.

Fitment

Suitable for the following F8X M-cars only:
– BMW M2 (F87) – 2016–2020
– BMW M3 (F80) – 2014–2018
– BMW M4 (F82/F83) – 2014–2020

Position: Rear Differential – Front Mounting Bush
SKU: PFR5-4025BLK

Installation Notes

– Direct OEM replacement
– Press tools required for bush removal
– Professional installation strongly recommended
– Ideal for drift, track, fast-road and high-power builds

About Powerflex

Powerflex is a leading global manufacturer of high-performance polyurethane bushes for road, race and motorsport. Their Black Series lineup is designed specifically for maximum stiffness, precision and durability under extreme loads, making them ideal for high-output BMW M-cars.