MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing

$139.95
$139.95
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The MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing (MMR55-1603) is a direct replacement for the factory rear differential mounting bushing on the BMW F87 M2, F80 M3, F82 / F83 M4, G87 M2, G80 / G81 M3, and G82 / G83 M4. Manufactured from 80A durometer grey polyurethane with a black anodized 6061-T6 aluminum sleeve, the bushing provides a more controlled connection between the rear differential and chassis while reducing unwanted differential movement under load.

Designed as a direct-fit replacement for the factory rear bushing, MMR55-1603 installs into the existing differential mounting location without cutting, drilling, or permanent modification. 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.

Second Rear Differential Mounting Point:

A second MMR55-1603 bushing can be used when adding an MMX Dual Differential Mount, which adds a second rear differential mounting point. F8X M2 / M3 / M4 applications use the MMX F8X Dual Differential Mount (MMR55-1001), while G8X applications use the MMX G8X Dual Differential Mount (MMR55-1606).

Product Details:

  • Direct replacement for the factory rear differential mounting bushing
  • Compatible with both BMW F8X and G8X M2 / M3 / M4 applications
  • 80A durometer grey polyurethane construction
  • Black anodized 6061-T6 aluminum sleeve
  • Reduces unwanted differential and drivetrain movement under load
  • Direct-fit installation with no cutting, drilling, or permanent modification required
  • Designed for minimal increase in NVH
  • Two bushings can be used with the appropriate MMX Dual Differential Mount
  • Sold individually
  • MMX SKU: MMR55-1603

Notes:

  • MMR55-1603 retains the standard differential mounting height. It is not the MMX raised differential bushing.
  • Professional installation is recommended.
MMX Performance G8X / F8X Rear Differential Polyurethane Rear Bushing

$139.95

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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