MMR55-1605

MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4

The MMX Rear Diff Raised Poly Bush is a two-position bush for the BMW G8x M2, M3 and M4, replacing the factory rear differential mounting bush. The centre section can be set to OEM height or +10mm Lifted, correcting driveshaft geometry on lowered vehicles and reducing heat and premature wear on the axle shafts. Used alongside the MMX Front Differential Lift Mount / Cradle (MMR55-1604) for the 3-point setup, and with a second bush and the MMX Dual Differential Mount (MMR55-1606) for the full 4-point setup.

Rear Diff Poly Bush, OEM or Lifted.

The MMX Rear Diff Raised Poly Bush (MMR55-1605) is a direct replacement for the factory rear differential mounting bush on the BMW G8x M2, M3 and M4. Set to the OEM height position, it tightens up the connection between the differential and the chassis at the rear mounting point, reducing movement under load without changing the vehicle's geometry.

The same bush also solves a problem specific to lowered cars. Lowering a G8x M2, M3 or M4 changes the geometry of the rear axle, placing the driveshafts under an angle they were never designed to run at. This accelerates wear on CV joints and axle shafts, and increases heat build up at the diff. Set to the +10mm Lifted position, the bush's centre section raises the rear mounting point, restoring correct driveshaft geometry and taking the strain off the drivetrain.

Fitted at the front, the MMX Front Differential Lift Mount / Cradle (MMR55-1604) works to the same OEM or Lifted position, and together the two form the 3-point setup. For a full 4-point setup, a second bush is fitted alongside the MMX Dual Differential Mount (MMR55-1606), also set to match the same height throughout.

What makes the bush unique is that one part covers both applications. It isn't a raised version and a stock version sold separately, it's a single bush where the centre section position at the point of fitting determines whether it's simply reducing movement, or correcting geometry on a lowered car.

MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4
SKU: MMR55-1605

MMX Rear Diff Raised Poly Bush I G8x I M2 I M3 I M4

Sale price£90.99

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The MMX Rear Diff Raised Poly Bush is a two-position bush for the BMW G8x M2, M3 and M4, replacing the factory rear differential mounting bush. The centre section can be set to OEM height or +10mm Lifted, correcting driveshaft geometry on lowered vehicles and reducing heat and premature wear on the axle shafts. Used alongside the MMX Front Differential Lift Mount / Cradle (MMR55-1604) for the 3-point setup, and with a second bush and the MMX Dual Differential Mount (MMR55-1606) for the full 4-point setup.

If you already run the MMX High Capacity Diff Sump (MMR55-1600) and the MMX Dual Differential Mount (MMR55-1606), the Front Differential Lift Mount / Cradle (MMR55-1604) and a second Rear Diff Raised Poly Bush complete the ultimate 4-point setup.



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Vehicle fitment.

While every effort has been made to ensure the accuracy of vehicle information, we are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their specific vehicle and engine variant.

Series

G-Series

Chassis code

G80, G81, G82, G83 & G87

Model year

M2 (2023+), M3 & M4 (2021+)

Where to purchase

Over 100 dealers, globally.

Our network of expert MMX Performance dealers can supply our full range, together with product guidance and advice, plus often an experience fitting service.

If you haven't got a MMX Performance dealer close to you, don't worry! Remember you can buy direct from our MMX Performance webshop.

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About MMX

A decade worth of obsession.

MMX Performance products have been designed and developed in the UK with passion by enthusiasts, for enthusiasts. All of our products are created in the world's toughest development lab: motorsport. We push the limits and reach new heights on track; then refine our products to give you the performance you need when you want it on the road.

Our extensive range of BMW and MINI upgrades offer unrivalled quality, performance and reliability worldwide; furthermore, every product carrying the MMX logo is thoroughly durability tested both on the road and track, so you can have complete peace of mind that you're installing only the best quality products to unlock the true performance potential from your car.