Powerflex PFF5-5452 Polyurethane Polybush Engine/Motor Mount Insert Bush Kit - BMW 3 Series G20, Z4 G29 & Toyota GR Supra A90 - Red 65A Road Series Torque Mount Void Filler, Drivetrain Stabiliser (OE 22116860465/22116860466)

Powerflex PFF5-5452 Poly Insert - BMW G20, Z4 G29, Toyota GR Supra A90 - Red 65A Road Series

Looking to tighten up engine movement and give your car a more connected, precise feel on the road? The Powerflex PFF5-5452 polyurethane insert is a quick, affordable way to stabilise the factory motor mount on BMW 3 Series G20, BMW Z4 G29 and Toyota GR Supra A90. This two-piece Red 65A Road Series poly bush occupies the voids in the original rubber, curbing unwanted movement for cleaner power delivery and sharper response without the cost of a full replacement mount.

Why this poly bush upgrade works

• Two-piece insert in Red 65A polyurethane fills OE voiding to control engine rock and pitch under load.
• More direct driveline feel for quicker pick-up, neater gearchanges and improved launch consistency.
• Ideal for daily drivers and fast-road builds seeking better stability and traction.
• Road Series compound designed to enhance chassis control while keeping comfort in mind.
• We have run this upgrade ourselves and customer feedback has been consistently positive for response and precision.

Please note: some increase in NVH can be present, typically at idle, as stiffer bushes transmit more vibration. This is normal for performance-focused inserts.

Vehicle compatibility

• BMW 3 Series G20 2018 onwards
• BMW Z4 G29 2018 onwards
• Toyota GR Supra A90 2019 onwards

Direct OE cross-references

• 22116860465
• 22116860466

What you receive

• 2 x polyurethane inserts (two bushes required per car)

Part number

PFF5-5452

Professional fitting

Installation available at MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk

Download the official Powerflex fitting guide

Fitment verification before dispatch

We will check compatibility before shipping. Add your UK registration or the last 7 digits of your VIN at checkout to ensure the correct parts are supplied.

Made by

Powerflex

Search-friendly terms

poly motor mount insert BMW G20, polyurethane mount bush Z4 G29, Supra A90 polybush engine support, PFF5-5452 bush kit, uprated motor mount bushing UK, driveline stabiliser insert BMW, torque control mount insert, performance poly mounts Road Series, BMW G20 vibration mount upgrade, G29 Z4 mount stiffener, Toyota Supra A90 engine support insert, Powerflex red 65A insert, engine movement reducer, wheel hop reduction insert, fast road mount bush