Powerflex PFF5-4021 Engine/Motor Mount Insert Bush Yellow 70A Poly for BMW M2 M3 M4 F80 F82 F83 F87 (F8x) 2012-2019 | Uprated Polyurethane Void Filler Engine Support | Performance Fast Road & Track Bushing | S55 Drivetrain Mount Upgrade

Poly Motor Mount Insert Upgrade for BMW F8x M Cars

Unlock sharper response and a more connected drive with this Powerflex polyurethane mount insert for the BMW F80 F82 F83 F87 platform. By filling the voids in the factory engine supports, this simple upgrade curbs powertrain movement, tightens shift feel and improves power delivery without making your M car harsh to live with. Ideal for spirited road use and track days where you want precision, traction and consistency.

Why this poly bush insert belongs on your F8x

• Fills the gaps in the OE motor mounts to control torque reaction and reduce engine rock
• Powerflex Yellow 70A polyurethane for durability, heat resistance and long-term performance
• Balanced stiffness that sits between soft factory mounts and very hard full replacements
• Quick, in-situ install that does not require removing the original mounts
• Minimal increase in cabin vibration at idle with notable gains in control on the move

What you will feel on the road and circuit

• Crisper throttle response and improved drivability
• Tighter, more precise gearchanges
• More immediate power transfer to the rear wheels
• More stable chassis balance on and off throttle
• Supports and protects OE mounts by limiting excessive movement

Expect a slight rise in NVH at idle as a normal trade-off for the improved control. Once moving, the benefits outweigh the small increase in vibration for most enthusiasts.

Vehicle fitment

• BMW F87 M2 2014 to 2019
• BMW F80 M3 2012 to 2018
• BMW F82 and F83 M4 2013 to 2019

Part information

Part number: PFF5-4021

OEM cross references: 22112284817, 22112284818

Quantity per car: 1

Material: Powerflex Yellow 70A polyurethane

Brand: Powerflex

Installation and support

Designed for straightforward fitting with the mounts still on the car. For professional installation, speak to us.

• Book fitting with MJ Modifications, Warwickshire. Request a quote: info@mjmodifications.co.uk
• Download the official guide: Powerflex installation instructions

Fitment check before dispatch

We verify compatibility before shipping. Add your UK registration or the last 7 of your VIN at checkout so we can confirm the correct application.

Tried and trusted by our team and customers

We run this insert on our own builds and many client cars. Feedback is consistently positive, with owners reporting cleaner response, better shift quality and a more planted feel without unwanted harshness. A high value upgrade for any F8x M car that sees fast road or track use.

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