MMR55-1606 - MMX BMW Dual Differential Mount - G8x M3/M4
MMX BMW Dual Differential Mount - G8x M3/M4
Clamp it down, send it forward. The MMX Dual Differential Mount for your G8X M3/M4 is purpose-built to solve the weak link BMW left behind—diff slop. From the factory, the rear differential hangs off a single bushing. It’s fine for daily driving, but the moment you floor it, that soft mount lets the diff twist, squandering torque, upsetting traction, and adding strain to the driveline.
MMX fixes the flaw with a second solid mounting point that locks the diff into the subframe where it belongs. Precision CNC-machined brackets, premium hardware, and perfect alignment deliver OE-level fit with motorsport-level rigidity. The payoff? Faster throttle response, harder launches, and no more wheel-hop drama when boost hits.
Why choose the MMX Dual Diff Mount?
No flex, no waste – Keeps the diff planted under power and cornering.
Maximum grip – Sends torque to the wheels instead of into rubber deflection.
Built to last – CNC billet construction and hardware designed for punishment.
Simple install – Bolt-on upgrade, no cutting, no compromises.
For anyone chasing clean, repeatable power delivery from the S58, the MMX Dual Differential Mount is the bridge between factory comfort and uncompromised motorsport performance.
Clamp it down, send it forward. The MMX Dual Differential Mount for your G8X M3/M4 is purpose-built to solve the weak link BMW left behind—diff slop. From the factory, the rear differential hangs off a single bushing. It’s fine for daily driving, but the moment you floor it, that soft mount lets the diff twist, squandering torque, upsetting traction, and adding strain to the driveline.
MMX fixes the flaw with a second solid mounting point that locks the diff into the subframe where it belongs. Precision CNC-machined brackets, premium hardware, and perfect alignment deliver OE-level fit with motorsport-level rigidity. The payoff? Faster throttle response, harder launches, and no more wheel-hop drama when boost hits.
Why choose the MMX Dual Diff Mount?
No flex, no waste – Keeps the diff planted under power and cornering.
Maximum grip – Sends torque to the wheels instead of into rubber deflection.
Built to last – CNC billet construction and hardware designed for punishment.
Simple install – Bolt-on upgrade, no cutting, no compromises.
For anyone chasing clean, repeatable power delivery from the S58, the MMX Dual Differential Mount is the bridge between factory comfort and uncompromised motorsport performance.
Prop 65 Warning
Cross Reference
MMR55-1606
Product Q&A
Lifetime Replacement
This Product Is Covered By Our Lifetime Replacement Program
Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.
If you have any questions, would like to learn more or are ready to place a replacement claim, click here!
Text Us!
, or
[email protected].
Prop 65 Warning
