Diagram Reference #30
Supplied complete with M14 bolt, thread locker and Powerflex keyring. The bracket comes on its own without bushes, so you can choose to use it with a variety of bush combinations. Single OE bush, Dual OE bushes, Single OE bush with single PU bush (1 x PFR5-4026) or Dual PU bushes (2 x PFR5-4026). We would recommend dual PU bushes ideally. If you wish to use it with a single OE bush with a single PU bush, then the PU bush would fit in the vacant right-hand mounting hole in the subframe.
OEM Part Number: 33172284775
With the newer F8x M2/M3/M4s making big power and having superb chassis straight from the showroom, it's no wonder they're often found at the most serious of track-days or at tuning shops across the globe.
Unfortunately, the power that makes these cars so fun to drive eventually has an impact on the vehicle components, most notably the rear differential bushes.
Despite having the provision for two mounting bushes on the factory tubular subframe, BMW opts to use only a single offset bush to mount the diff bracket to the subframe. This essentially creates a pivot point for the diff under torque loading, especially if the 4x front diff bushes are worn and softened.
With hard launch starts and sudden and frequent on-off throttle changes, this puts the single rear OE rubber bush through extreme torsional and directional forces, resulting in accelerated ageing with failure often seen at around the 30-40,000 mile mark and an unsettled and potentially clunky rear-end.
We are proud to release a high-performance solution to this problem, giving you the tools to re-establish rear-end stability on your F8x M2/M3/M4.
PFR5-4030 Dual Mount Diff Bracket is made from our in-house CNC machined 6082 High-Tensile Aluminium and is designed to utilise the secondary mounting position on the OE subframe. With the addition of a second bush, this prevents the diff from twisting under load, providing benefits such as:
- Reduced drivetrain movement
- Improved throttle response
- A more controlled and consistent on-off throttle chassis response.
- Improved tyre-to-road power transfer reducing wheel hop
- Reduced strain on fitted bushes
The corrosion-resistant Satin Black Anodised Aluminium Bracket is optimised for high stress and deflection whilst withstanding high torque loads but is designed to function equally on standard or modified vehicles with either a single OE bush or dual aftermarket bushes.
Although the bracket can be fitted without the need to remove the subframe from the vehicle completely, we would naturally recommend combining Powerflex products by using our already hugely popular 80A durometer PFR5-4026 Rear Diff Mounting Bush for both subframe rear mounting positions with the addition of our PFR5-4025 Rear Diff Front Mounting Bushes for the front for the ultimate in differential control and a lasting fast-road or track solution.
Upgrade Your Car with POWERFLEX Polyurethane Bushes!
Suspension bushes are some of the most highly stressed components fitted to a motor car. They undergo enormous strains and in the most arduous of conditions with no maintenance or lubrication.
The material OEM bushes are manufactured from is a rubber compound containing natural products that deteriorate with age. It becomes softer and more pliable, resisting the forces placed on it less and less. Therefore allowing more and more movement of suspension components and offering less and less control over the suspension geometry.
This in turn causes accelerated tyre wear, braking instability, and poor handling. This is the single biggest reason you can instantly tell the difference driving a three-year-old car compared to a showroom new one. However, even new cars will benefit from POWERFLEX bushes because of the superior design they offer much more effective control of the suspension components to a much greater extent than normal rubber items.
With the technological advances of polyurethane, it has been possible to overcome the common problem associated with harder bushes which is increased noise. By correctly engineering the polyurethane compound, bushes can be made 25-30% stiffer than new rubber items but with exactly the same noise absorbing properties.
Why Choose POWERFLEX Bushes?
- Precision Engineering: POWERFLEX's suspension bushes are meticulously engineered, leveraging the latest in polyurethane technology to deliver precision and performance.
- Enhanced Performance: Experience unparalleled control, handling, and responsiveness. POWERFLEX's Polyurethane Bushes are designed to optimize your vehicle's suspension, taking your driving to the next level.
- Safety First: Trust in our commitment to safety. POWERFLEX's Polyurethane Bushes provide increased stability, reducing the risk of accidents and enhancing road grip.
- Longevity and Durability: Polyurethane is known for its exceptional durability. POWERFLEX bushes outlast traditional rubber alternatives, reducing maintenance and replacement costs.
- Lifetime Warranty: Drive with confidence knowing that our products are built to last. POWERFLEX's Polyurethane Bushes come with a Lifetime Warranty, offering peace of mind and long-term value.
- Trusted Worldwide: Join the ranks of satisfied car enthusiasts worldwide who trust POWERFLEX to enhance their driving experience.
- POWERFLEX bushes make sense.
- POWERFLEX for improved performance.
- POWERFLEX for increased safety.
- POWERFLEX for prolonged tyre life.
The prices and quantities shown on our website are per pack.
Each pack includes the amount of bushes required for that vehicle. If your vehicle requires two of one bush, you only have to buy the product once.
The number of bushes required per car are shown in the product code (e.g., codes ending in x1, x2, x4 mean 1, 2, or 4 per car).