Powerflex
Powerflex Black Series Rear Differential Rear Mounting Bush PFR5-4026BLK for BMW M2 M3 M4 (F87 F80 F82 F83) – OEM 33177852495
Powerflex Black Series Rear Differential Rear Mounting Bush PFR5-4026BLK for BMW M2 M3 M4 (F87 F80 F82 F83) – OEM 33177852495
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Rear final drive rear mount bush upgrade for BMW F87 M2, F80 M3, F82 and F83 M4
Transform the back end of your F8x with this Powerflex Black Series polyurethane rear differential rear mount bushing. Designed for hard road use and track days, this race-focused diff carrier mount limits unwanted movement of the final drive under load, giving cleaner launches, stronger traction out of bends and a sharper drivetrain response without harshness. The integrated support washer adds extra strength where the differential needs it most, helping control twist and maintaining alignment under aggressive acceleration.
We have installed this part on customer builds and our own development cars. Feedback has been consistently positive, with owners noting a tighter rear axle, reduced wheel hop, more precise throttle pick-up and a more connected feel from the S55-powered M cars as well as the F87 M2.
Key benefits
- High-performance polyurethane bushing for the rear final drive mounting point
- Built-in support washer for added stability under torque
- Cuts diff wind-up and axle tramp for improved grip and consistency
- Ideal for fast road, circuit use and high-torque tuned setups
- Direct-fit, low-maintenance solution from a trusted performance brand
What is included
1 x rear final drive rear mount bush. One required per vehicle.
Vehicle compatibility
- BMW F87 M2 2014 to 2019
- BMW F80 M3 2012 to 2018
- BMW F82 M4 Coupé 2013 to 2019
- BMW F83 M4 Convertible 2013 to 2019
OE cross-reference: 33177852495
Part number
PFR5-4026BLK
Diagram reference
Reference No. 22
Installation and fitting
Professional fitting recommended. Book installation with MJ Modifications in Warwickshire. For a tailored quote email info@mjmodifications.co.uk.
Download the installation guide
Fitment check
We can confirm compatibility before dispatch. Add your UK registration or last 7 VIN characters at checkout to ensure you receive the correct bushing for your BMW M2, M3 or M4.
Why enthusiasts choose this upgrade
This rear differential rear mount bush provides the control that enthusiastic drivers demand. By reducing bushing deflection, it supports cleaner power delivery, better stability under braking and corner exit, and long-term durability compared with tired rubber mounts. Our customers regularly report a more planted feel from the rear axle and increased confidence on B-roads and during track sessions.
Manufacturer
Powerflex Black Series
Common search terms
BMW F80 M3 diff carrier bush, F82 M4 rear final drive mount, F83 M4 Cabriolet diff hanger bushing, F87 M2 rear axle polybush, BMW rear differential bush upgrade, Powerflex Black Series diff bushing, PFR5-4026BLK part, OE 33177852495 replacement, BMW M diff mount upgrade, F8x rear diff mount, BMW M2 M3 M4 poly bush, rear drivetrain mount bushing, track day diff bush, performance polyurethane rear mount.
