Powerflex PFR5-4025 Rear Diff Front Mount Bush/Bushing Kit (4pc) - BMW M3 M4 F80 F82 F83 F8x 2014+ - Polyurethane Polybush Final Drive Carrier Front Location Mounts - Replaces OE 33172284774

Powerflex PFR5-4025 - Front Mounts for Rear Final Drive - BMW F80 M3, F82 M4, F83 M4 - Poly Upgrade - Replaces OE 33172284774

Unlock sharper response and dependable traction on your F8x with this set of four Powerflex PFR5-4025 front differential carrier bushes. By swapping out the soft factory rubber at the front of the rear diff, these uprated polyurethane mounts stabilise the driveline under load, minimise movement, and deliver cleaner power delivery on the road and at track days.

Each bush uses an alloy inner sleeve with integrated support for accurate location and long service life versus ageing rubber. Expect a more planted rear axle, reduced wheel hop and axle tramp, less drivetrain lash and a more connected feel without an uncivilised ride. We run these on our own cars at MJ Modifications and feedback from our customers has been consistently positive for stability, grip and confidence.

Why choose Powerflex PFR5-4025 for your F8x

• Direct-fit front location bushes for the rear differential on BMW F80 M3, F82 M4 and F83 M4
• Performance polyurethane compound controls diff movement for improved traction and throttle response
• Alloy sleeves with integrated support increase precision and durability compared with OE rubber
• Cuts wheel hop and mitigates driveline shunt under hard acceleration and DSG or manual shifts
• Ideal for fast road and occasional track use while maintaining daily usability
• Proven upgrade on the S55-powered F8x platform

What you receive

• Set of 4 x front differential carrier bushes with sleeves

Compatibility

• BMW M3 F80 2014+
• BMW M4 F82 2014+
• BMW M4 F83 2014+

Part numbers

• Powerflex reference: PFR5-4025
• OE cross-reference: 33172284774

Fitment and support

Professional installation recommended. For expert fitting at MJ Modifications in Warwickshire, request a quote at info@mjmodifications.co.uk.

Installation guide: Download Powerflex fitting instructions

We can check it fits your car

Add your UK registration or last 7 digits of the VIN at checkout and we will verify compatibility before dispatch.

Search terms to help you find this item

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