Powerflex PFR5-1920 Rear Subframe/Cradle Front Mount Insert Kit (2pc) for BMW 4 Series F32 F33 F36 (F3x) xDrive AWD 4x4 – Rear Axle Carrier Bush/Bushing Polyurethane Polybush Upgrade – OE 33316792509

Rear Axle Carrier Front Mount Insert Kit for BMW 4 Series xDrive F32 F33 F36

Part number: PFR5-1920 | Pack size: 2 inserts | Diagram reference: 20 | OE reference: 33316792509

Transform the way your BMW 4 Series drives with this premium polyurethane insert kit designed to stabilise the front mounts of the rear axle carrier. By filling the cavities in the original equipment mount, these inserts control unwanted fore and aft movement, delivering a tighter rear end, cleaner feedback and a more connected feel on the road.

This upgrade is ideal if you want sharper response without replacing the entire mount. The correctly engineered polyurethane compound supports the factory rubber, helping maintain alignment under load while keeping cabin comfort in check. Expect improved traction, better mid-corner stability and more confidence under braking and acceleration.

What you will notice

• Crisper turn-in and a more planted rear axle during fast direction changes
• Reduced axle shift that can lead to squirm or tramlining over bumps
• More consistent geometry for enhanced grip and braking stability
• Helps minimise irregular tyre wear by reducing subframe movement
• Durable polyurethane insert with long service life and Powerflex Lifetime Warranty

Compatibility

For BMW 4 Series xDrive all wheel drive models on the F3x platform:

• F32 Coupe xDrive
• F33 Convertible xDrive
• F36 Gran Coupé xDrive

Position: front mounts of the rear axle carrier. This kit adds inserts to the existing factory mount to reduce movement.

Why enthusiasts choose this insert kit

• Quick, cost-effective handling upgrade compared with full mount replacement
• Supports OEM bush compliance while improving chassis control
• Consistent performance in daily driving and spirited use
• We have fitted these on our own builds and customer cars with excellent feedback on balance and composure

Fitting and support

Professional installation available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote. We recommend a four-wheel alignment check after installation for best results.

Search terms our customers use

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