Powerflex DUAL-MOUNT REAR DIFFERENTIAL BRACKET with Dual Rear Differential Bush Kits
PFR5-4030 x1
PFR5-4026 x2
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.
PFR5-4026 is a replacement bush that features a built-in support washer, providing further stability of the diff under acceleration. PFR5-4026 can also be used in conjunction with our PFR5-4030 dual-mount rear differential bracket to mount two bushes into the factory positions. Made using our signature Purple 80A durometer polyurethane and Black anodised 2011-T6 aluminium, to reduce drivetrain deflection and the potential for wheel-hop during hard launches.
OEM Part Number: 33177852495
OEM Part Number: 33316899168
Included:
PFR5-4030 x1 Dual Mount Rear Diff Bracket
PFR-4026 x2 Rear Diff Mount Kits
Fitment:
BMW M2 M3 M4 F80 F82 F83 F87
If your unsure or require more advice please contact us directly and one of our skilled staff will be happy to advise and supply any parts you require.
Fitting also available, please contact for information and pricing. If you are unsure if this is suitable for your vehicle, please contact us at Tuning Developments on enquiry@tuningdevelopments.co.uk and we will gladly assist and answer any queries.
