MMX Dual Diff Mount for BMW G87 M2, G80 & G81 M3, G82 & G83 M4
Product Description
The MMX G8x Dual Differential Mount is designed to improve differential stability on the BMW G8x M2, M3 and M4 by adding a second point of support to the differential.
BMW left a secondary differential mounting location unused from the factory. The MMX mount makes use of this existing mounting point to significantly reduce differential movement under acceleration, torque loads and rapid changes in load. The result is a more controlled drivetrain with sharper response and improved driver feedback.
Designed as a direct-fit solution, the mount bolts directly to the factory differential with no modification required. The factory differential sump can remain in place, meaning there is no need to drain the differential fluid during installation.
The MMX Dual Differential Mount can be used with the original BMW rubber differential bush, as well as compatible polyurethane or solid differential bushes, making it suitable for both road-focused and more extensively modified G8x builds.
Key Features
- Adds a second support point to the G8x differential
- Utilises the factory secondary differential mounting location
- Reduces unwanted differential movement under load
- Improves drivetrain response and stability
- Helps improve traction by controlling differential movement
- Can help reduce differential and CV seal weeping caused by excessive movement
- CNC machined from lightweight 6061-T6 billet aluminium
- Direct OEM-style fitment with no chassis modification required
- Factory differential sump remains in place
- No differential fluid draining required for installation
- Compatible with the OEM BMW rubber differential bush
- Compatible with suitable polyurethane and solid differential bushes
- Supplied with the required mounting hardware
- Suitable for both road and track-focused applications
Compatibility
BMW G8x M2
- BMW G87 M2 – 2023 onwards
- S58 engine
BMW G8x M3
- BMW G80 M3 – 2021 onwards
- BMW G81 M3 Touring – 2023 onwards
- S58 engine
BMW G8x M4
- BMW G82 M4 – 2021 onwards
- BMW G83 M4 Convertible – 2021 onwards
- S58 engine
Compatible with both RWD and xDrive applications, subject to the specific vehicle configuration.
MMX Part Number: MMR55-1606
Please note: This product is supplied without the secondary differential bush. The MMX Dual Differential Mount is designed to work with the appropriate OEM, polyurethane or solid bush separately.
Ideal For
The MMX G8x Dual Differential Mount is particularly suited to G8x owners looking to reduce drivetrain movement without committing to a more comprehensive differential mounting system.
It is a worthwhile consideration for tuned cars, fast road builds and track-focused G8x M2, M3 and M4s, where increased torque and repeated high-load acceleration place greater demands on the factory differential mounting arrangement.
It can also be used as part of a more comprehensive MMX differential setup alongside the company's other G8x differential mounting and cooling products.
Why Choose MMX G8x Dual Differential Mount?
The factory G8x differential mounting arrangement provides an unused secondary mounting location that can be utilised to provide additional support. Rather than replacing the entire differential mounting system, the MMX Dual Differential Mount makes use of this existing point to add another layer of control.
The result is a relatively straightforward modification that can reduce differential movement while retaining the factory differential sump and avoiding permanent modifications to the vehicle.
For owners running increased power, upgraded differential bushes or regular track use, controlling drivetrain movement becomes increasingly relevant. The MMX mount provides an additional support point without requiring the complexity of a complete differential mounting conversion.
Manufactured from 6061-T6 billet aluminium and designed specifically around the G8x platform, it offers a robust, neatly integrated solution for improving differential stability.
Fitting Information
The mount is designed as a direct bolt-on installation using the existing factory mounting location. All required mounting hardware is included.
Secondary differential bush is not included and must be purchased separately.
Professional installation is recommended, particularly where the vehicle is being used for track driving or alongside other differential and drivetrain modifications.
Shipping & Delivery
Dispatch Times
Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.
UK & International Shipping
We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.
Import Duties & International Orders
International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.
Damaged Shipments
If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.
Returns
Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.
Full details are available in our Shipping Policy and Returns & Refund Policy.
Warranty & Disclaimer
Warranty
Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.
Fitment & Installation
Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.
Motorsport Use Disclaimer
Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.
Product Images & Descriptions
Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.
Full details are available in our Terms of Service and related policy pages.
