Adding the MMX dual differential mount gives your G8X a second rear mounting point. That second point needs its own bushing support. The MMX Performance Rear Differential Bushing Insert for the dual rear mount fills the voids in the OEM rubber bushing there, so the second mount works as hard as the first.
The factory rubber stays in place, so NVH stays close to stock, and the whole thing reverses back to OEM.
Completing the G8X Dual Rear Mount Insert System
The dual mount needs a second OEM rubber bushing plus one of these inserts. Choose the kit option to get the OEM bushing (33316899168) with it. Pair with the MMX single rear mount insert kit (MMR55-1618) to support both rear mounts.
What's Included
- 1 x billet rear differential bushing insert (MMR55-1619)
- 1 x OEM rubber bushing 33316899168 (MMR55-1619KT option only)
Key Features
- CNC-machined 6061-T6 billet aluminum
- Fills voids in the OEM rubber bushing to limit differential movement
- Retains factory rubber for low NVH
- Designed for the MMX Dual Differential Mount (MMR55-1606)
- Fully reversible installation
- Part numbers: MMR55-1619, MMR55-1619KT (with OEM bushing)
Vehicle Fitment
Fits the following models with the MMX dual rear differential mount, RWD and xDrive:
- BMW G80 M3 Sedan (2021-2026)
- BMW G81 M3 Touring (2023-2026, not sold in the US)
- BMW G82 M4 Coupe (2021-2026)
- BMW G83 M4 Convertible (2022-2026)
- BMW G87 M2 (2023-2026)
Installation Notes
Professional installation is recommended. Requires the MMX dual differential mount (MMR55-1606) and a second OEM bushing.
- Support the rear differential and remove the second rear mount bushing location hardware.
- Press the OEM rubber bushing into the dual mount if not already fitted.
- Install the MMX insert into the bushing voids.
- Reassemble and torque to BMW specification.
