Powerflex Poly Bushes Pack - Rear Subframe Front Bush Insert - PFR5-1920 - F20, F21 1 Series xDrive

Rear Subframe Front Position Insert Kit for BMW 1 Series F20 F21 xDrive

Part number: PFR5-1920

Diagram reference: 20

Pack contents: 2 inserts

OEM cross-reference: 33316792509

Unlock tighter, more predictable handling from your BMW with this high-grade polyurethane subframe insert kit. Designed for the forward mounting point on the rear carrier of F20 and F21 1 Series xDrive models, these precision-moulded inserts locate into the voids of the factory rubber mount to curb subframe shift under load. The result is crisper turn-in, better traction on corner exit and a more connected rear end without a harsh ride.

• Reduces unwanted movement of the rear cradle for sharper steering response
• Helps maintain alignment under braking and cornering for improved stability
• Enhances tyre contact patch for more grip and confidence on B-roads and track days
• Durable polyurethane formulation balances control with everyday comfort
• Great upgrade for fast-road and performance builds seeking a planted rear axle
• Backed by a lifetime warranty for long-term peace of mind

Why enthusiasts choose this upgrade

Ageing rubber mounts can allow the rear axle to wander, causing vague feedback, uneven tyre wear and braking squirm. These urethane inserts reinforce the original bushings by filling the cavities, improving chassis precision and helping your suspension geometry do exactly what it should. We run these on our own builds and customer feedback has been consistently positive for feel, traction and confidence.

Fitment

• BMW 1 Series F20 F21 xDrive models
• Rear subframe, front location
• Insert style kit that works with the existing OE bush

What you get

• Pair of polyurethane subframe bush inserts
• Engineered to press into the voids of the original mount for a secure, precise fit

Installation and support

Professional fitting available at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Key search terms

BMW F20 F21 1 Series xDrive rear cradle insert, rear axle mount insert, polyurethane bushing kit, urethane subframe insert, rear carrier bush upgrade, handling upgrade, suspension improvement, performance bush kit, fast road setup, stability under load.