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MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing MMR55-1603

$139.99
SKU:
MMR55-1603
Weight:
2.00 LBS
Shipping:
Calculated at Checkout
MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing MMR55-1603

Description

The MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing (MMR55-1603) is a direct replacement for the factory rear differential mounting bushing on BMW F87 M2, F80 M3, F82/F83 M4, G87 M2, G80/G81 M3, and G82/G83 M4 models. Manufactured from 80A durometer grey polyurethane with a black anodized 6061-T6 aluminum center sleeve, this bushing provides a more controlled connection between the rear differential and chassis while reducing unwanted differential and drivetrain movement under load.

Designed as a direct-fit replacement for the factory rear differential bushing, the MMX Performance MMR55-1603 installs into the existing differential mounting location with no cutting, drilling, or permanent modification required. The firmer polyurethane construction provides increased differential control while maintaining a minimal increase in noise, vibration, and harshness (NVH), making it suitable for both street and track-driven F8X and G8X applications.

Fitment

BMW F8X

  • BMW F87 M2

  • BMW F80 M3

  • BMW F82 M4

  • BMW F83 M4

BMW G8X

  • BMW G87 M2

  • BMW G80 M3

  • BMW G81 M3

  • BMW G82 M4

  • BMW G83 M4

The MMR55-1603 polyurethane bushing is compatible with both F8X and G8X differential mounting systems.

Second Rear Differential Mounting Point

A second MMR55-1603 bushing can be used when adding an MMX Dual Differential Mount. The Dual Differential Mount creates a second rear differential mounting point, allowing two MMR55-1603 bushings to support the rear of the differential.

The appropriate Dual Differential Mount is chassis-specific:

  • F8X M2 / M3 / M4: MMX F8X Dual Differential Mount (MMR55-1001)

  • G8X M2 / M3 / M4: MMX G8X Dual Differential Mount (MMR55-1606)

The MMR55-1603 polyurethane bushing itself is compatible with both systems.

MMR55-1603 bushings are sold individually. Two bushings are required when configuring the rear differential with the appropriate chassis-specific MMX Dual Differential Mount.

Key Features & Specifications

  • Direct replacement for the factory rear differential mounting bushing

  • Compatible with BMW F8X and G8X M2, M3, and M4 applications listed above

  • 80A durometer grey polyurethane construction

  • Black anodized 6061-T6 aluminum center sleeve

  • Reduces unwanted differential and drivetrain movement under load

  • Provides a more controlled connection between the differential and chassis

  • Direct-fit installation with no cutting, drilling, or permanent modification

  • Designed for minimal increase in NVH

  • Can be used individually as a factory rear differential bushing replacement

  • Two bushings can be used with the appropriate MMX Dual Differential Mount for a second rear differential mounting point

  • Maintains the standard differential mounting height

  • Not the MMX raised differential bushing

  • Sold individually

  • MMX SKU: MMR55-1603

Installation Notes

  • MMR55-1603 is compatible with both F8X and G8X differential mounting systems.

  • For F87 M2, F80 M3, and F82/F83 M4 applications, use the MMX F8X Dual Differential Mount (MMR55-1001).

  • For G87 M2, G80/G81 M3, and G82/G83 M4 applications, use the MMX G8X Dual Differential Mount (MMR55-1606).

  • The MMR55-1603 retains the standard differential mounting height.

  • Professional installation is recommended.