Powerflex Poly Bushes Pack – Rear Diff Rear Mounting Bush – PFR5-4026 – BMW F82 F83 4 Series M4
Unlock sharper handling, improved traction and greater drivetrain stability with the Powerflex Rear Differential Rear Mounting Bush, part number PFR5-4026, designed specifically for the BMW 4 Series M4 F82 and F83. This uprated polyurethane rear diff bush is a direct replacement for the factory rubber bush and features a built-in support washer to add extra support under acceleration, helping to control differential movement and keep power going to the road.
Why choose Powerflex rear diff bushes for your BMW M4 F82 F83
- Reduces unwanted diff movement for more precise handling and stability
- Sharper throttle response and improved traction under load
- Polyurethane construction controls flex better than ageing rubber
- Improved road holding and chassis performance for fast road and track use
- Helps maintain consistent rear-end geometry for confidence when pushing on
- Prolonged tyre life and greater cost-effectiveness over time
- Lifetime Warranty from Powerflex for peace of mind
Key details
Part number: PFR5-4026
Vehicle fitment: BMW M4 F82 Coupe and F83 Convertible
Location: Rear Differential Rear Mounting Bush
Diagram reference: 22
Number of bushes in pack: 1
Built-in feature: Integrated support washer for added stability under acceleration
OE cross-reference: 33177852495
Real-world results from Nforcd
We have fitted this Powerflex rear diff bush to our own cars and many customer BMW M4s. Feedback has been consistently positive, with noticeably tighter rear-end control, improved traction when accelerating hard and a more connected feel without introducing unwanted harshness.
Installation and support
This is a direct replacement bush designed to upgrade the original rubber component. For professional fitting, we recommend booking with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
What you are upgrading
Factory rubber bushes soften and degrade over time, leading to imprecise handling, uneven tyre wear and instability during braking or hard acceleration. Powerflex polyurethane bushes control movement more effectively, keeping your rear differential securely located and your suspension working as intended.
Common search terms to help you find the right part
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