Powerflex PFR5-1927 Rear Diff Front Mount Insert Pair - BMW 1 Series F20 F21 xDrive AWD - Polyurethane Polybush Bushings - Rear Final Drive Front Bush/Mount Void Filler - OE 33316792513 - Drivetrain Handling Upgrade Kit

Rear Final Drive Front Mount Insert Pair for BMW F20 F21 1 Series xDrive

Transform rear-end stability and driveline control on your BMW with this polyurethane insert kit. Designed to slot into the existing rubber mount at the front of the rear differential, these void-fill inserts limit unwanted movement under load, giving you cleaner launches, better traction out of bends and a more connected feel on both fast road and track.

We have installed this upgrade on our own cars and countless customer builds. Feedback is consistently positive, with sharper response, reduced wheel hop and a noticeable improvement in rear axle composure under hard acceleration.

Why choose this upgrade

• Firmer differential control for crisper throttle response and more consistent traction
• Helps reduce axle tramp, wheel hop and clunking caused by excessive mount deflection
• Fits into the OE mount to fill the voids, minimising movement without a harsh ride
• Improved confidence under cornering, braking and rapid gear changes
• Durable polyurethane construction with excellent resistance to oil, heat and road contaminants
• Lifetime warranty from the manufacturer for long-term peace of mind

Key details

• Part number: PFR5-1927
• Vehicle fitment: BMW 1 Series F20 F21 xDrive AWD
• Location: Front mounting point of the rear final drive
• Pack contents: 2 insert pieces (pair)
• Diagram reference: 27
• OE cross-reference: 33316792513

Who is it for

Perfect for drivers seeking a driveline mount upgrade for fast road, spirited driving or track days. If you are noticing imprecise rear end behaviour, tramp on launch or inconsistent grip when applying power, these inserts are a proven, cost-effective solution.

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. For a fitting quote or advice, email info@mjmodifications.co.uk.

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