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Performance M

Powerflex PFR5-4612 Polyurethane Subframe Bushing Insert Kit (Pair) - Rear Axle Carrier/Cradle Front Mount Upgrade for BMW E46 M3 2000-2006 & Z4 M E85/E86 2006-2009 - Rear Crossmember Bush Inserts - OEM 33312283573 33312283574

Powerflex PFR5-4612 Polyurethane Subframe Bushing Insert Kit (Pair) - Rear Axle Carrier/Cradle Front Mount Upgrade for BMW E46 M3 2000-2006 & Z4 M E85/E86 2006-2009 - Rear Crossmember Bush Inserts - OEM 33312283573 33312283574

£65.88
£65.88
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PFR5-4612 Poly Insert Pair for BMW E46 M3 and BMW Z4 M E85 E86

Unlock sharper chassis control and rear-end composure with the Powerflex PFR5-4612 insert set. Engineered polyurethane inserts fill the voids in the factory rear axle carrier front position mounts to curb unwanted cradle movement, giving your M-car crisper turn-in, more consistent geometry under load and greater confidence on B-roads and track days.

We have fitted these inserts for enthusiastic road users and club drivers, and feedback has been outstanding. Expect tighter rear-end behaviour, improved traction off corners and more stable braking without the vagueness associated with ageing rubber mounts.

Highlights

  • Stiffens the rear cradle to reduce deflection and keep alignment true under acceleration, cornering and braking
  • Enhances steering feel and stability for a more connected drive
  • Helps reduce irregular tyre wear by limiting rear carrier movement
  • Durable polyurethane resists ageing far better than OE rubber for long-term performance
  • Designed as an insert for a cost-effective upgrade with excellent NVH control
  • Backed by the Powerflex lifetime warranty for peace of mind

Compatibility

Direct insert for the original rear axle carrier front location mounts. For the following M models only:

  • BMW Z4 M Roadster E85 2006 to 2009
  • BMW Z4 M Coupe E86 2006 to 2009
  • BMW E46 M3 all variants

What is included

  • Pack contents: 2 x insert pieces
  • Diagram reference: 10
  • Powerflex part number: PFR5-4612

Why polyurethane inserts

Stock rubber mounts soften and fatigue, allowing the rear subframe to shift and upset geometry. Powerflex polyurethane controls that movement so the suspension can do its job, keeping the tyres planted for better grip, stability and confidence. A simple insert solution gives a noticeable upgrade without the harshness of solid bushes.

Installation and support

As these are inserts, they locate into the voids of the existing mounts for a straightforward, great-value upgrade. Professional fitting is recommended for best results. For supply and installation, contact MJ Modifications in Warwickshire and request a quote: info@mjmodifications.co.uk.

OEM cross references

33312283573, 33312283574

Search-friendly terms

BMW rear axle carrier insert, E46 M3 rear cradle mount upgrade, Z4 M E85 E86 subframe mount inserts, polyurethane rear mount kit, M3 rear crossmember inserts, performance suspension bushes, handling upgrade kit, road and track setup, chassis stiffening inserts, rear cradle front position bush kit, anti-deflection subframe inserts, BMW M polyurethane mounts.

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