+ Raise diff for better axle alignment (via offset bushings)
+ Solid bushings have near-zero flex or axle wind-up
+ More power transferred to the wheels
+ More direct and positive feedback and road feel
+ Eliminate the potential failure of stock bushings
This bushing set covers the front bracket and the rear mount in the subframe. All mounts are solid aluminum for a more direct response and zero deflection compared to the factory rubber or urethane mounts. On race cars we prefer aluminum to minimize deflection as much as possible. While urethane might be fine for street use they pale in comparison to solid when used on the track. Solid materials have almost zero wear and tear, eliminating another maintenance item from your prep list.
The front mounts in this kit are offset 14mm higher than standard mounts. This raises the diff to better align the rear axle shafts with a lowered suspension. As you lower the ride height the angle of the rear axles becomes more extreme, which could cause premature failure in the CV joints. Raising the diff also helps with clearance between the ground and the diff cooling fins.
Because of the solid nature of these bushings we only recommend them for track use. We do offer several urethane options if you want a more street-friendly bushing option (but without the height correction).
Note: small trimming of the front bushing bracket and the rear subframe crossmember are required. This is for clearance purposes and will not affect performance or rigidity.
Unlike on the F8X it's not possible to add a second rear mount. The differential bracket was a separate piece on F8X but is cast into the diff cover on the G8X.
You can re-use all of your existing hardware or add new hardware using the links below.
BMW Fitments:
2 Series
G87 (2024-) > M2 (2024+)
3 Series
G80 (2021-) > M3 (2021-)
G80 (2021-) > M3 Competition RWD (2021-)
G80 (2021-) > M3 xDrive Competition (2021-)
4 Series
G82 / G83 (2021-) > M4 (2021-)
G82 / G83 (2021-) > M4 CSL
G82 / G83 (2021-) > M4 Competition RWD (2021-)
G82 / G83 (2021-) > M4 xDrive Competition (2021-)
