Powerflex Black Series Engine/Motor Mount Insert Bush Kit for BMW M4 F82 F83 (4 Series) – Polyurethane 95A Uprated Performance Track/Fast Road Drivetrain Mount Upgrade – PFF5-4021BLK

Part number: PFF5-4021BLK

BMW M4 F82 F83 Poly Motor Mount Insert Upgrade

Unlock tighter drivetrain control on your BMW M4 with this Black Series polyurethane motor mount insert kit. Designed to slot into the voids of the factory engine mounts, these 95 Shore A inserts tame excessive engine rock, helping your M4 feel sharper, more responsive and more connected on track and fast road.

Why choose this poly insert kit

• Reduces engine movement for cleaner gear changes and crisper throttle pick up
• Improves power delivery to the rear wheels for a more direct, predictable feel
• Helps stabilise the powertrain under braking and acceleration for balanced handling
• Supports the life of the original mounts by filling the voids rather than replacing the entire mount
• Black Series 95A compound prioritises control for circuit and competition use
• Smart design allows installation with the factory mounts still on the car

Built for performance

Manufactured in a high durometer polyurethane, these inserts offer a serious step up in stiffness without the cost and harshness of solid mounts. Expect a small increase in cabin vibration at idle due to the firmer connection, which is a normal and worthwhile trade off for drivers chasing precision and consistency.

Fitment

• BMW M4 F82 coupe and F83 convertible
• Quantity in pack: 2 inserts
• Diagram reference: 20

Replaces OEM mount references

• 22116787659
• 22116855460
• 22116760330
• 22116773744

Track focused, fast-road friendly

This Black Series insert kit is engineered for motorsport use and is a superb choice for tuned M4s, track day builds and drivers who want a taut, connected feel without committing to full replacement race mounts.

Tried, tested and recommended by MJ Modifications

We run these inserts on our own cars and have fitted them for many happy customers. The feedback is consistent every time: cleaner shifts, tighter response and a more composed chassis under load.

Professional fitting available

Want it installed by experts We offer fitting at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and booking.

Keywords for search: BMW M4 engine mount insert, F82 motor mount upgrade, F83 polyurethane bush, uprated mount insert, Black Series poly mount, performance engine mount M4, drivetrain stability upgrade, track day engine mount, fast road mount insert.