PFF5-4001BLK – Front Radius Arm Bush – M2 M3 M4

The Powerflex PFF5-4001BLK Front Radius Arm to Chassis Bush is a Black Series motorsport upgrade designed exclusively for the BMW F8X platform (M2, M3, M4). Replacing the soft OEM rubber bush, this ultra-stiff mount dramatically improves steering precision, braking stability and front-end geometry control under aggressive driving and track use.

SKU: PFF5-4001BLK
Position: Front Radius Arm → Chassis Bush
Application: Black Series (Motorsport)
Fitment: F8X ONLY

Key Features

Black Series Motorsport Polyurethane

– Maximum stiffness for extreme performance
– Eliminates unwanted movement in the radius arm
– Ideal for track, drift and high-power builds

Sharper Steering Response

– Tighter, more accurate front-end feel
– Improved turn-in and mid-corner control
– More consistent geometry under load

Improved Braking Stability

– Reduces deflection under heavy braking
– Keeps suspension geometry stable during weight transfer
– Enhances confidence in fast-road and circuit conditions

Long-Life, High-Strength Construction

– Resistant to heat, oil and road contaminants
– Far more durable than OEM rubber bushes
– Designed to withstand high load cycles

Benefits

The PFF5-4001BLK bush transforms the front-end behaviour of the F8X M-cars. Steering becomes more direct, turn-in sharper and front-end grip more consistent. Perfect for drivers demanding maximum chassis precision from their M2, M3 or M4.

Fitment

BMW M-cars (F8X):
– BMW M2 (F87 – Competition + non-Comp)
– BMW M3 (F80)
– BMW M4 (F82/F83)

SKU: PFF5-4001BLK
Position: Front Radius Arm → Chassis Bush
Fits: F8X ONLY

Installation Notes

– Pressing required for OEM removal
– Wheel alignment recommended after installation
– NVH increase expected due to motorsport stiffness
– Professional fitting strongly recommended

About Powerflex

Powerflex Black Series components are engineered for ultimate chassis control in motorsport environments. They offer maximum stiffness, durability and geometry stability under the extreme loads seen in track and race conditions.