Drivetrain› Differentials and Rear-End Components

MMR Performance

Dual Differential Mount

$546.00

SKU: MMR55-1606

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The MMR Performance Dual Differential Mount is an engineered drivetrain upgrade for BMW G8x models.

Designed for the G87 M2, G80/G81 M3, and G82/G83 M4, this mount adds a second support point to the differential for improved stability and response.

It increases rigidity and reduces unwanted differential movement, sharpening driveline response during hard acceleration and spirited driving.
Show original supplier description
The MMR Performance Dual Differential Mount is engineered to strengthen a critical component of the BMW G8x drivetrain, specifically designed for the G87 M2, G80/G81 M3, and G82/G83 M4. This precision-machined mount utilizes the factory secondary bush mounting point to add a second support, significantly improving differential stability during hard acceleration, spirited driving, and track use. By increasing rigidity and reducing unwanted differential movement, it sharpens driveline response. The mount bolts directly to the factory differential, retaining the factory sump, and is fully reversible for returning the vehicle to stock. It is compatible with OEM rubber differential bushes (33 31 6 899 168), as well as aftermarket polyurethane or solid bushings. Key features include a CNC-machined 6061-T6 billet aluminum construction for strength and low weight, reduced differential movement to help prevent diff and CV seal weeping, and improved tire traction, stability, and driver feedback. Professional installation is recommended, and the product includes a 1-year manufacturer warranty.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMMR Performance
Part NumberMMR55-1606
CategoryDrivetrain

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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