MMX Dual Differential Mount BMW G8x M2/M3/M4
£419.99
- Description
- Additional information
- Vehicle Fitment
- Shipping & Returns
- Warranty
- Question about this product?
MMX Dual Differential Mount – BMW G8x M2/M3/M4
Give your G8x driveline a stronger foundation. This MMX Dual Differential Mount adds a second support point to the rear differential by using the factory secondary bush mounting hole. The result is tighter control of the diff under hard acceleration and cornering, with a clear, OEM-like fit and finish.
Why it matters
The differential sends engine power to the rear wheels. Under load, the factory setup can allow the diff to twist slightly. That movement can soften throttle response, cause shunt, and stress seals. This mount braces the diff, cuts excess movement, and helps the car put power down more cleanly.
What you will notice
Sharper driveline response, more consistent launches, and improved traction when accelerating out of bends. It does not add power, but it helps you use the power you have more effectively. No diff oil drain is required for installation. Note: A small increase in driveline feel or noise (NVH) may be noticed, especially with polyurethane or solid bushes.
- Uses the factory secondary bush mounting hole to add support and stability under load
- OEM-style bolt-on fit – no cutting or drilling needed
- Keeps the factory diff cover in place – no fluid changes
- Works with OEM rubber bush (33 31 6 899 168), plus polyurethane or solid bushes
- Helps reduce diff and CV seal weeping by limiting movement
- CNC machined from 6061-T6 billet aluminium for strength and low weight
- Reversible – can be removed to return to stock
- Ideal for track days, spirited road driving, and tuned cars
Fitment
Designed for BMW G8x platform cars – M2, M3 and M4 with the S58 drivetrain. This includes popular G80 M3 and G82/G83 M4, plus G87 M2 models.
Please use the site’s vehicle lookup to confirm fitment for your car, or check the Vehicle Fitment tab for full details.
Installation notes
Bolts directly to the factory differential housing with the factory diff cover retained. No need to drop the diff or drain oil. We recommend professional installation and torquing all fasteners to BMW specifications.
Specifications
| Product | MMX Dual Differential Mount – BMW G8x M2/M3/M4 |
| SKU | MMR55-1606 |
| Material | 6061-T6 billet aluminium, CNC machined |
| Compatibility | OEM rubber bush 33 31 6 899 168, plus polyurethane or solid bushes |
| Install | Direct bolt-on, no fluid drain, reversible |
| Intended use | Road, track day, and tuned vehicles |
| Weight | 4 kg |
|---|---|
| Dimensions | 40 × 30 × 20 cm |
| Brand |
MMR55-1606 Confirmed Fitment
Please note, this information is a combination of supplier provided compatibility data and our workshop expertise. While every effort has been made to ensure the accuracy of this information Progressive Parts Ltd are not liable for abnormalities or inaccurate data. Customers are wholly responsible for checking fitment for their vehicle. More information is available from our Terms & Conditions
UK Shipping
All items marked as available for 'Express Delivery' are dispatched next working day before 3pm.
If you order contains a mixture of 'In Stock', 'Stock Order' or 'Backorder' items, your order may be split to optimise logistics and improve delivery times.
Out of stock items are sourced from our extended inventory and supplier inventory where possible. These may require manufacturing or carry extended lead times which we endeavour to alert you about if the website hasn't already provided an estimated delivery timescale.
DELIVERY INFORMATION
International Shipping
For accurate pricing, please visit the website checkout which will automatically generate a shipping quote to your country.
If your delivery address is outside of the UK, local tax will be removed and you will have to pay import duties and taxes when the shipment reaches your country.
All international shipments may be subject to cross-border inspections by customs authorities while customs policies vary widely from country to country. You must meet any additional charges for customs clearance and we recommend that you contact your local customs office for further information.
DELIVERY INFORMATION
Returns
Progressive Parts operates a 14 day return period from the date of delivery for unused products.
Follow the returns process below for our team to generate you an RMA ID and instruct you to return the goods.
RETURNSWarranty Information
This product is supplied with a manufacturer’s warranty only. No additional warranty is provided by Progressive Parts Ltd. (Our Terms & Conditions)
For details of coverage, terms and conditions, please refer to the manufacturer’s warranty information below or visit their website.
MMX's Warranty Policy
All MMX items are warranted to be free from defects in the materials and workmanship prior to installation. Warranty is only applicable to the original owner. This warranty does not cover labour costs, misuse, faulty installation, failure of related parts or parts purchased other than from MMX which may have affected the performance of an MMX product.
We offer a 1-year warranty against defects in workmanship or materials, not extending to normal tear and wear or misuse. This warranty does not cover installation. You must provide us with a proof of purchase, defect or the result of wear or misuse.
MMX will only replace or repair warranty items. No refunds will be given. MMX or the product manufacturer will inspect or test all products prior to a warranty claim adjustment.
The customer shall be responsible for selecting a reputable installer with current liability insurance to cover any damage that may arise through installation of MMX products. MMX‘s listing and any recommendation of installation facilities on this website or elsewhere shall not constitute as a ground for any liability. Notwithstanding any other provision of this agreement, MMX's maximum combined liability shall be limited to the payments made by the facilitator under this agreement for the specific product that caused the alleged damages.
The above warranty information applies to Hardware only and excludes any Software products
Starting a Claim
Please contact our team directly via email. You will be supplied a warranty form and instructions on how to complete your claim.
Question about this product?
Our team will respond as quickly as possible, please also consider using the chat widget (located bottom right of the webpage).
Stock at Progressive Parts
Delivery timescales are given as estimates in good faith, but cannot be taken as precise or exact information. We highly advise against booking installation/workshop time or engaging in preparatory work until you've received and inspected the goods.
What do our stock statuses mean?
1+ IN STOCK in green stock is readily available in one of our warehouses for express delivery (at the time of viewing).
LOW STOCK in green means we're running low! 1 or 2 left on the shelf so act fast. Over evenings, weekends and bank holidays this stock can move quickly so please bear this in mind.
0 IN STOCK in blue means our primary warehouse does not have unallocated stock, but our UK partners do. Often these can be shipped quickly and efficiently. You'll be notified via the Track My Order page if further delays are unavoidable.
MADE TO ORDER in blue means we've partnered with a supplier which primarily makes their products to order. It's not on our shelf, but your order goes into production immediately.
0 IN STOCK in orange means everybody we work with is unfortunately out of stock. Stock is not available in the UK. The best course of action is to place an order to create an allocation from the next batch arriving.
OUT OF STOCK in red. This product is unavailable to order, for whatever reason we're unable to obtain stock or there is an issue with supply/lead times.
We're tuners too!
Our staff are car enthusiasts, we understand the need for speed... This includes getting your orders out the door as quickly and securely as possible!
In some instances, extended lead times are unavoidable. This is as labour-intensive and frustrating for us as it is for you, please know we are doing our best to facilitate your modification goals. Abuse of our staff or systems will not be tolerated.
Thank you, Team PP
For emissions components this encompasses noise, emissions and balanced back pressure, which have a strong influence on maintaining engine performance (power), and fuel efficiency. Type approval ensures that an aftermarket component will reach, or exceed the performance standard of the corresponding OE part.
Type-approval then, is a certain guarantee that an end user will receive a product of OE equivalent performance attributes.
Products on the Progressive Parts website that meet this approval will be clearly marked or labelled EC or ECE approved.