PFR5-4026 Is a replacement bushing that features a built-in support washer, providing further stability of the diff under acceleration.
This part fits the following models:
BMW
2 Series
F87 2 Series M2 (2016+)
3 Series
F80 M3 (2015+)
4 Series
F82 M4 (2015+)
F83 M4 (2015+)