Powerflex PFR5-4030 Rear Differential Mount Brace/Bracket Upgrade Kit - Dual/Twin Mount Final Drive Carrier Support, Subframe Reinforcement, CNC Billet Aluminium - Fits BMW F80 M3, F82 M4, F87 M2, M2 Competition (F8x) S55

Dual-Mount Rear Final Drive Carrier Brace for BMW F80 M3, F82 M4, F87 M2 | Powerflex PFR5-4030

Transform rear axle control and put the power down with confidence. The Powerflex twin-mount rear final drive support adds the missing second fixing point to the F8x M platform, dramatically reducing differential wind-up, axle tramp and rear end knock on fast road and trackday builds. If you are chasing sharper throttle response, cleaner gear changes and repeatable traction, this billet aluminium brace is the upgrade your M2, M3 or M4 has been waiting for.

Part number: PFR5-4030

What it does for your BMW M2, M3 and M4

• Converts the F8x M chassis to a true twin-mount final drive arrangement using the unused factory subframe location
• Controls pinion angle change for smoother power delivery and reduced driveline lash
• Cuts wheel hop and axle tramp for better traction out of corners and harder launches
• Stabilises on and off throttle behaviour for a more planted rear axle
• Helps prolong bush life and reduces stress on the rear driveline

Engineered for strength and consistency

• CNC machined from 6082 aluminium for high strength with low weight
• Satin black anodised finish for corrosion resistance and durability
• Designed to work with a single OE bush or a dual-bush setup
• Road Series specification for fast-road confidence with minimal change in NVH

In the box

• PFR5-4030 dual-mount final drive brace
• M14 fixing bolt
• Thread locker
• Powerflex keyring

Compatibility

For BMW F8x M models including F80 M3, F82 M4 and F87 M2. Ideal for standard and tuned S55 cars looking for improved traction and rear axle stability. Diagram reference: 30. OEM reference where applicable: 33172284775.

Recommended complementary parts

• PFR5-4026 rear final drive mounting bush, 80A hardness. Fit in both subframe positions for a matched twin-bush arrangement
• PFR5-4025 front differential mounting bushes for complete driveline location

Real-world results

We have installed this brace on in-house builds and customer F80, F82 and F87 cars with excellent feedback. Owners report noticeably tighter rear-end control, reduced shudder under load and more consistent traction in both dry and wet conditions.

Fitting service

Professional installation is recommended. We can supply and fit at MJ Modifications in Warwickshire. For a fitting quote, email info@mjmodifications.co.uk.

Search-friendly terms

BMW M3 F80 diff support brace, F82 M4 rear axle mount, F87 M2 final drive bracket, F8x twin mount diff carrier, S55 driveline upgrade, rear subframe diff reinforcement, billet aluminium diff brace, traction and axle tramp reduction, rear end clunk fix, fast road and trackday M3 M4 M2 parts, performance rear driveline mount, BMW M2 Competition diff bracket, F80 rear axle stability upgrade, BMW M4 differential support kit, Powerflex Road Series rear drive mount, BMW F series M rear diff upgrade, F8x launch control shudder reduction.