- Description
- Fitment
- Refund Policy
The MMX Performance G8X M2 / M3 / M4 Dual Differential Mount is a precision-engineered drivetrain upgrade designed to significantly improve differential stability, traction, and power delivery in BMW’s latest M platform. Developed specifically for the G87 M2, G80/G81 M3, and G82/G83 M4, this billet solution utilizes the factory secondary mounting location to add a critical second support point to the differential assembly.
Under high load conditions such as hard acceleration, aggressive cornering, and track use, the factory differential mounting system allows for unwanted movement. This can lead to inconsistent power delivery, reduced traction, and premature wear on drivetrain components. The MMX dual differential mount addresses this by increasing mounting rigidity, reducing deflection, and improving overall driveline response.
By stabilizing the differential more effectively, this upgrade enhances tire contact consistency, improves driver feedback, and reduces the likelihood of differential and CV seal weeping commonly associated with excessive movement. The result is a more controlled, predictable driving experience under both road and track conditions.
Manufactured from CNC-machined 6061-T6 billet aluminum, the MMX mount delivers exceptional strength while maintaining a lightweight profile. The design retains full compatibility with the factory differential sump and does not require fluid removal during installation. Fitment is fully OEM-based with no cutting, drilling, or permanent modification required.
The system is compatible with OEM rubber differential bushings (33 31 6 899 168) as well as aftermarket polyurethane or solid bush options, allowing flexibility based on the desired balance between comfort and performance. Installation is fully reversible, enabling the vehicle to be returned to stock configuration at any time.
Product Details
- Designed for BMW G87 M2, G80/G81 M3, and G82/G83 M4
- Adds a secondary mounting point for increased differential stability
- Reduces unwanted differential movement under load
- Improves traction, driveline response, and driver feedback
- Helps prevent differential and CV seal weeping
- CNC-machined from 6061-T6 billet aluminum
- Retains factory differential sump with no fluid removal required
- Direct OEM fitment with no cutting or drilling
- Fully reversible installation
- SKU: MMR55-1606
- Fits OEM rubber bush (33 31 6 899 168), polyurethane, or solid bushes
Vehicle Applications
Related Products
- MMX Performance G8X M2 / M3 / M4 Billet High Capacity Oil Pan
- MMX Performance G8X M2 / M3 / M4 Ultimate Differential Track Pack
Notes
- Requires a differential bushing to complete installation (OEM or aftermarket)
- Professional installation recommended
- Designed for both street and track use
- Includes a 1-year manufacturer warranty against defects in materials and workmanship
- Designed and tested in the United Kingdom
Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
