Rear Dual-Mount Rear Differential Bracket - PFR5-4030

({IF["Supplied complete with M14 bolt, thread locker and Powerflex keyring
With the newer F8xM2/M3/M4's 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. We are proud to release a high-performance solution to this problem, giving you the tools to re-establish rear-end stability on your F8xM2/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."!="-"]})Supplied complete with M14 bolt, thread locker and Powerflex keyring
With the newer F8xM2/M3/M4's 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. We are proud to release a high-performance solution to this problem, giving you the tools to re-establish rear-end stability on your F8xM2/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.({ENDIF})

Diagram Reference

30

Compound

Road Series

Location on Vehicle

Rear

Adjustment

Fixed

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.

Included in the Kit:

1 x PFR5-4030 - Dual-Mount Rear Differential Bracket

Replaces Part Numbers

33 17 2 284 775 - 33172284775 - 2 284 775 - 2284775

Related Items

PFR5-4026 - Rear Diff Rear Mounting Bush
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

PFR5-4025 - Rear Diff Front Mounting Bush
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

Series / Chassis

F80 / F80N / F82 / F82N / F83 / F83N / F87 / F87N / MOSP

Models

M2 / M3 / M4

Engines

N55 / S55

To fit the following vehicles

F80 S55 M3 Saloon
F80N S55 M3 Saloon
F82 S55 M4 Coupe
F82 S55 M4 GTS Coupe
F82N S55 M4 Coupe
F82N S55 M4 CS Coupe
F83 S55 M4 Convertible
F83N S55 M4 Convertible
F87 N55 M2 Coupe
F87N N55 M2 Coupe
F87N S55 M2 Competition Coupe
MOSP S55 M4 GT4 Coupe