Powerflex PFR5-1921 Rear Cradle/Subframe Mount Bush/Bushing Insert Kit (2) for BMW 3 Series F30 F31 F34 Saloon Touring GT 2012-2019 - Poly

PFR5-1921 Polyurethane Rear Cradle Mount Inserts for BMW 3 Series F30 F31 F34

Tighten up the rear end of your 3 Series with PFR5-1921 polyurethane cradle mount inserts. This pair of precision-moulded inserts occupies the voids in the factory rubber mounts to control subframe movement under load, giving a more direct connection to the chassis, cleaner turn-in and a planted rear axle during acceleration, braking and cornering.

We fit these in-house at MJ Modifications and the difference is immediate. Customers consistently report more confidence on B-roads, better stability on uneven surfaces and a noticeable improvement in traction without the cost of pressing out the original mounts.

Why this upgrade works

• Firmer rear axle location for consistent geometry and improved grip
• Reduces subframe deflection that can cause vague steering and mid-corner movement
• Sharper response and more predictable handling in real-world driving
• Helps tyre wear by keeping alignment more stable under load
• Inserts fit the voids of the OE bush for a cost-effective improvement

Product information

• Brand: Powerflex
• Part number: PFR5-1921
• Vehicle compatibility: BMW 3 Series F30 Saloon, F31 Touring, F34 Gran Turismo
• Contents: 2 inserts for the rear of the rear cradle
• Material: Performance polyurethane
• Diagram reference: 21
• Replaces BMW reference: 33316792510
• Intended use: Daily driving and enthusiastic road use

Fitting and support

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

What you will notice

• More connected rear chassis feel with cleaner power delivery out of bends
• Improved braking stability and reduced rear-end float on faster roads
• A great-value suspension tweak that complements springs, shocks and alignment

Search-friendly terms

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