Powerflex PFR5-4613 Rear Subframe / Rear Axle Carrier Polyurethane Insert Bushes (Pair) for BMW E46 3 Series Touring, E46 M3, Z4/Z4M (E85/E86) & X3 (E83) - Rear Cradle Bushings, Fast Road Handling Upgrade

PFR5-4613 Polyurethane Rear Axle Carrier Insert Kit - BMW E46, E46 M3, Z4 and Z4M, X3

Sharpen the way your BMW drives with PFR5-4613 rear cradle insert bushes. This polyurethane insert kit fits into the voids of the factory rubber mounts on the rear axle carrier, limiting unwanted movement for cleaner geometry control, better traction and a more planted rear end. Ideal for daily use and fast-road driving, this simple upgrade delivers tighter handling, improved stability and confident cornering without adding harshness.

We have installed these on our own cars and for customers, and the feedback is consistent: crisper turn-in, reduced rear-end squirm and a more predictable chassis. The durable polyurethane material resists ageing and deformation far better than standard rubber, giving long-term performance with minimal maintenance.

Why this upgrade works

• Reduces subframe flex for precise alignment control under acceleration and braking
• Improves rear-end grip, traction and stability through bends
• Helps curb wheel hop and anti-tramp on powerful launches
• Assists tyre wear consistency by keeping contact patches more stable
• Cost-effective alternative to full bush replacement

Key details

• Part number: PFR5-4613
• Location: rear axle carrier - rear position insert
• Material: performance-grade polyurethane
• Pack size: 2 inserts
• Diagram reference: 11
• Backed by a Lifetime Warranty from Powerflex

Vehicle compatibility

• BMW E46 3 Series including Touring
• BMW E46 M3
• BMW Z4 including Z4M
• BMW X3

Fits into the voids of the original OE rubber mount on these models. Chassis references commonly include E46, E85 and E86 Z4, and E83 X3.

What you receive

• 2 x rear carrier insert bushes

Fitting and support

Professional installation recommended. MJ Modifications in Warwickshire can supply and fit this kit - request a quote at info@mjmodifications.co.uk. We are happy to advise on suitability, installation and complementary suspension upgrades.

Additional reference

3331677078133312283419

Order PFR5-4613 today for a proven handling upgrade that tightens the rear end, enhances confidence and delivers reliable performance mile after mile.

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