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

The Powerflex PFR5-4025 Rear Diff Front Mounting Bush is a high-quality polyurethane upgrade designed to improve differential stability, rear-end control and drivetrain precision on the BMW M2, M3 and M4 (F8X). This Road Series version offers the perfect balance between performance and comfort, making it ideal for fast-road and tuned daily-driven cars.

SKU: PFR5-4025
OEM Reference: 33172284774

Key Features

Road Series Polyurethane

– Stiffer and more durable than OEM rubber
– Reduces differential movement under load
– Improves drivetrain precision without harshness

Sharper Throttle & Drivetrain Response

– Minimises diff flex during acceleration
– Reduces wheel hop and rear-end instability
– Provides a more connected driving feel

Improved Rear-End Stability

– Keeps the differential correctly aligned
– Enhances traction and corner exit confidence
– Ideal upgrade for tuned and fast-road builds

Long-Lasting Construction

– Resistant to oil, heat and road contaminants
– Outlasts factory rubber components
– Maintains geometry and performance over time

Benefits

Upgrading to the PFR5-4025 enhances the rear-end stability of the F8X platform without increasing noise or vibration excessively. Perfect for spirited street driving, Stage 1–2 cars and owners wanting a tighter, more controlled rear axle without going full Black Series stiffness.

Fitment

Suitable for:
– BMW M2 (F87) – 2016–2020
– BMW M3 (F80) – 2014–2018
– BMW M4 (F82/F83) – 2014–2020

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

Installation Notes

– Direct replacement for OEM rubber bush
– Press tools required for removal
– Professional installation recommended
– Ideal for tuned daily drivers and fast-road setups

About Powerflex

Powerflex is a world-leading manufacturer of performance polyurethane bushes for road, race and motorsport. Their Road Series range offers improved stability, longevity and control while maintaining street comfort and refinement.