Powerflex BMW M4 F82 F83 Rear Differential Mount Bush - Polyurethane 80A Diff Carrier/Final Drive Bushing - Anti Wheel Hop Axle Tramp Fix - 4 Series M Upgrade - PFR5-4026

Rear differential mount upgrade for BMW M4 F82 and F83 – Part no. PFR5-4026

Unlock sharper launches, stronger traction and a tighter driveline with this high-performance rear final drive mounting bush for the F8x M4. Part number PFR5-4026 replaces the soft factory rubber with a durable 80A polyurethane construction and an integrated aluminium support washer, controlling differential movement under hard acceleration to help tame wheel hop and improve response on fast road and track.

We have fitted this upgrade on customer M4s in-house and the feedback has been consistently excellent. Expect noticeably reduced axle tramp, more consistent launches and a more connected rear end without compromising everyday driveability.

Why choose this driveline mount

• Controls diff movement for cleaner power delivery and improved traction
• 80A polyurethane bush for long-lasting performance under heat and load
• Built-in support washer in black anodised 2011-T6 aluminium for added stability
• Reduces drivetrain deflection that can cause wheel hop during hard launches
• Direct replacement for the OE mount using factory locations
• Ideal for fast road, track days and tuned cars seeking a firmer rear axle

Use with optional dual-mount bracket

Can be paired with the PFR5-4030 dual-mount rear differential bracket to install two bushes in the original positions for even greater differential support and consistency under load.

Fitment and details

• Vehicle: BMW M4 F82 coupe and F83 convertible
• Diagram reference: 22
• Quantity in pack: 1 bush
• Replaces OEM part numbers: 33177852495 and 33316899168
• Materials: 80A polyurethane with black anodised 2011-T6 aluminium washer
• Part number: PFR5-4026

Popular search terms

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Professional installation

We recommend professional fitting. MJ Modifications in Warwickshire can install this rear differential mount and the optional dual-mount bracket. Request a fitting quote at info@mjmodifications.co.uk.