Powerflex PFR5-3608 Polyurethane Suspension Rear Trailing Arm Front Bush Kit (RTAB) for BMW X3 E83 2003-2010 – Rear Toe/Track Control Front Bushing Pair – Replaces 33326770817 33326770786

Rear Trailing Arm Front Bushing Set for BMW X3 E83 (2003–2010) – Powerflex PFR5-3608

Restore rear-end precision on your BMW X3 E83 with this uprated rear trailing arm front bushing set from Powerflex. By replacing ageing factory rubber with performance polyurethane, the rear axle stays properly located, giving crisper turn-in, better stability under braking and more consistent alignment for improved tyre wear.

Ideal for daily driving and spirited road use, these bushes curb unwanted flex and reduce rear steer, helping your X3 feel planted and predictable on UK roads. We run Powerflex on our own cars and our customers consistently report a noticeable improvement in control without introducing harshness.

Part details

• Part number: PFR5-3608
• Vehicle: BMW X3 E83 SUV, 2003 to 2010
• Location: Rear axle trailing arm, front position (often called RTAB front)
• Pack contents: 2 bushes (pair)
• Diagram reference: 8
• Manufacturer warranty: Lifetime (from Powerflex)

Why upgrade these bushes

• Tighter rear-end control for confident cornering
• Reduced wandering and tramlining on uneven surfaces
• Improved braking stability and straighter tracking
• More even tyre wear thanks to better geometry retention
• Durable polyurethane resists oil, salt and road grime far better than rubber
• Excellent NVH management for road comfort

Typical symptoms these address

• Loose or vague rear behaviour
• Rear-end knock or clunk over bumps
• Uneven or accelerated inner-edge tyre wear
• Steering correction needed mid-corner or under braking

PFR5-3608 is a direct-fit replacement for the standard bushes in the front position of the rear trailing arms on the E83 platform. It’s a straightforward, high-value chassis refresh that transforms confidence and consistency.

Fitting and support

Professional installation recommended. We offer supply and fitting at MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk. A four-wheel alignment is advised after installation.

OE cross references

33326770817, 33326770786

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