PFF5-4020BLK – Engine Mount Insert Kit

The Powerflex PFF5-4020BLK Engine Mount Insert Kit is a Black Series polyurethane upgrade engineered to control engine movement on BMW F2X/F3X M-Lite models (M135i, M140i, M235i, M240i) and F8X M-cars (M2, M3, M4). By filling the large voids inside the OEM rubber engine mounts, this insert dramatically improves throttle response, shift precision and drivetrain stability under high load.

SKU: PFF5-4020BLK
Position: Engine Mount – Insert Kit
Application: Motorsport / Extreme Performance

Key Features

Black Series Motorsport Polyurethane

– Maximum stiffness for track, drift and high-power builds
– Significantly reduces engine movement under torque
– Ideal for aggressively tuned or heavily modified BMWs

Sharper Throttle & Gear-Shift Response

– Cleaner, more immediate power delivery
– Reduces drivetrain slack and “rocking” during hard shifts
– Increases precision during high-speed gear changes

Enhanced Drivetrain Stability

– Helps keep the engine aligned during acceleration
– Reduces stress on exhaust systems, turbo components and propshaft
– Improves consistency during aggressive driving

Simple Insert Design

– Fits into the OEM engine mounts
– No pressing or mount removal required
– Quick, cost-effective performance upgrade

Benefits

The PFF5-4020BLK insert kit offers a major improvement in engine stability and drivetrain feel for both M-Lites and M-cars. Engine movement is greatly reduced, giving sharper response, cleaner shifting and a more connected chassis feel. Perfect for cars running higher power levels or regular track activity.

Fitment

Suitable for:

F2X/F3X M-Lites:
– BMW M135i (F20/F21)
– BMW M140i (F20/F21)
– BMW M235i (F22/F23)
– BMW M240i (F22/F23)

F8X M-cars:
– BMW M2 (F87 – N55 + S55)
– BMW M3 (F80)
– BMW M4 (F82/F83)

SKU: PFF5-4020BLK
Position: Engine Mount Insert Kit

Installation Notes

– Inserts into the existing OEM mounts
– NVH increase expected due to Black Series stiffness
– Professional installation recommended
– Ideal paired with upgraded transmission and diff bushes

About Powerflex

Powerflex Black Series components are designed for serious track and motorsport use. They provide the highest stiffness, alignment precision and durability under extreme load — perfect for high-performance BMW builds.