Powerflex Road Series PFR5-4026 Rear Diff Mount Bush | Final Drive/Differential Mount Insert | Polyurethane 80A | BMW M2 M3 M4 F80 F82 F83 F87 (F8x) | Wheel Hop/Axle Tramp Fix Performance Bushing

Powerflex PFR5-4026 Rear Final Drive Mount Bush for BMW F80 F82 F83 F87 M Cars

Part number: PFR5-4026

Transform the way your F-series M car puts power down with this Powerflex rear final drive rear mount bush. By replacing the soft OE rubber insert with a high-quality polyurethane solution, it limits unwanted movement of the final drive unit under load, improving traction off the line and giving a more direct, connected feel when you get back on the throttle.

Designed around a Shore 80A polyurethane body with a black anodised 2011-T6 aluminium sleeve, this upgrade brings robust control to the rear drivetrain while keeping road manners in check. Expect cleaner launches, reduced axle tramp, less driveline shunt and sharper response when accelerating and shifting.

Why enthusiasts choose PFR5-4026

• Added support plate keeps the final drive securely located under hard acceleration
• Polyurethane 80A and 2011-T6 aluminium insert for long-term durability and consistent performance
• Cuts driveline movement for crisper throttle pickup and more precise gear changes
• Helps tame wheel hop and axle tramp during fast-road use and hard launches
• Direct replacement upgrade for the rear final drive rear mount on BMW F8x M models

Optional twin-mount bracket

For even tighter control of the rear drive unit, pair PFR5-4026 with the Powerflex PFR5-4030 twin-mount rear differential bracket to utilise both factory positions.

Vehicle compatibility

• BMW M2 F87
• BMW M3 F80
• BMW M4 F82
• BMW M4 Convertible F83

OEM reference numbers: 33177852495, 33316899168

Real-world results

We have fitted this part to numerous customer cars in the F8x range and the feedback has been consistently positive. Owners report a more planted rear end, stronger traction and a tighter, more confidence-inspiring drivetrain feel without compromising everyday usability.

Fitting and support

Professional installation recommended. MJ Modifications offers fitting at our Warwickshire workshop, simply email info@mjmodifications.co.uk for a quote.

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