Turner Motorsport Dual-Mount Differential Plate M2 F87/M3 F80/M4 F82

Rear diff support upgrade for BMW F8x M cars

Give your F8x rear end the strength it deserves. This precision CNC-machined dual mount plate transforms the factory single rear differential mount into a true twin-bushed setup, using the second OEM provision that BMW cast into the housing but never used. The result is a dramatically tighter final drive, reduced axle tramp under hard launches, crisper throttle-on response and far better consistency on fast road and track days.

We run this upgrade on our own builds and customers love the improvement in stability and confidence. If your car is tuned, driven spiritedly or seeing regular circuit time, this is a must-have reliability and performance enhancement.

Why you want this on your F8x

• Adds an additional rearward bush to the diff for proper dual mounting
• Cuts unwanted driveline movement that causes wheel hop and clunks
• Sharpened shift feel and throttle-to-tyre response under load
• Protects factory bushes on high-torque applications and hard launches
• Ideal for fast road, track and drag use on turbocharged S55 and N55 cars

Engineered to take abuse

• 6061-T6 billet aluminium construction, Type II anodised for corrosion resistance
• Developed to withstand extreme driveline forces on the F8x platform
• Fully reversible, non-invasive, bolt-on fit with supplied hardware
• Best results with polyurethane differential bushes

Compatibility

Fits the following models using the factory second bush provision:

• BMW F80 M3 3.0 S55
• BMW F82 M4 3.0 S55
• BMW F83 M4 3.0 S55
• BMW F87 M2 3.0 N55
• BMW F87 M2 Competition 3.0 S55

In the box

• Dual-mount rear differential plate
• Installation hardware

Professional fitting available

We recommend professional installation. MJ Modifications in Warwickshire can fit and set this up for you. Request a fitting quote at info@mjmodifications.co.uk.

What owners are saying

Installed on customer F8x cars with fast-road and track setups, this brace has delivered tighter rear-end control, noticeably less hop on aggressive launches and greater confidence on corner exit. It is a simple bolt-on that makes a big difference.

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