Powerflex Black Series Rear Diff Front Mounting Bush Set (2) PFR5-425BLK for BMW F20 F21 F30 F31 1/3 Series 95 Shore Polyurethane OEM 33176760287

PFR5-425BLK Poly Bush Front Mounts for Rear Final Drive - BMW F20 F21 F30 F31

Sharpen your BMW’s rear end with this motorsport-grade polyurethane front mount set for the rear final drive. Built in Powerflex’s hardest compound for serious performance use, these uprated bushes stabilise the differential under acceleration and braking, cutting unwanted movement and giving you cleaner traction, quicker response and repeatable handling on fast road and track.

We fit these on our own builds and for customers, and the results speak for themselves. Expect a tighter rear axle, reduced driveline shunt and far better control over wheel hop. If your factory rubber is tired or you want a no-nonsense upgrade that lasts, this is the go-to solution.

Why this upgrade

• 95A hardness polyurethane for maximum control and consistent geometry under load
• Front position mounts for the rear differential housing to stabilise the final drive
• Improves traction off the line, reduces axle tramp and calms powertrain wind-up
• More direct rear-end feel with crisper turn-in and better throttle-to-tyre connection
• Poly material resists oil, heat and road contamination far better than rubber
• Durable long-life solution for track days, racing, rally and fast-road use

Fitment

• BMW 1 Series F20, F21 2011 to 2019
• BMW 3 Series F30, F31 2011 onwards

What you receive

• 2 x polyurethane front-position differential mounting bushes - complete pair for one vehicle

Part numbers

• Manufacturer reference: PFR5-425BLK
• OE cross-reference: 33176760287

Fitting and support

Professional installation recommended. A firmer bush will increase NVH compared with standard rubber.

Need it installed or want advice. Book in with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk

Compatibility check

We can verify fitment before dispatch. Add your UK registration or the last 7 of your VIN at checkout.

Download the installation guide

Extra search terms

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