Powerflex BMW X3 E83 Rear Anti Roll Bar Bushes 18.5mm (Pair) – Polyurethane ARB/Stabiliser/Sway Bar – PFR5-4609-18.5 – OEM 33503411987 (2003–2010)

BMW X3 E83 Rear Roll Bar Mount Bushes 18.5 mm Pair | Powerflex Road Series | PFR5-4609-18.5

Transform the way your BMW X3 E83 corners with this uprated polyurethane rear roll bar mounting kit. By replacing tired factory rubber with Powerflex poly bushes, you gain crisper steering response, reduced body movement and a more planted rear end in fast bends and on rough British roads. Ideal as a performance handling upgrade or a long‑lasting OE replacement for daily driving.

Part number: PFR5-4609-18.5 | OEM reference: 33503411987 | Size: 18.5 mm internal diameter | Quantity: 2 bushes

Why this upgrade works

• Sharper turn‑in and improved rear axle control under load
• Polyurethane resists wear, oil and road grime for consistent performance
• Helps stabilise the chassis for greater confidence on B‑roads and motorways
• Maintains alignment better than ageing rubber for more predictable handling
• Excellent value upgrade that refreshes the rear suspension in one hit

We use these bushes on our own builds at MJ Modifications and customers regularly report a firmer, more precise feel with better grip and stability from their E83 after fitting.

Fitment and sizing

• Location: Rear roll bar mounting points on the subframe
• Diameter: 18.5 mm inner bore. Please measure your rear bar with vernier calipers before ordering
• Direct replacement for the original mounts. Works with the standard rear bar

Vehicle compatibility

BMW X3 E83 2003 to 2010. This listing is specifically for vehicles with an 18.5 mm rear bar. If unsure, measure the bar on your car to confirm.

What you receive

• 2 x rear roll bar mounting bushes

Cross references and IDs

• Powerflex: PFR5-4609-18.5
• BMW OE: 33503411987
• Series: Powerflex Road Series

Professional fitting

Prefer installation by specialists? MJ Modifications offers fitting at our Warwickshire workshop. Request a quote: info@mjmodifications.co.uk

Compatibility check before dispatch

Add your UK registration or last 7 of VIN at checkout and we will confirm the correct rear bar size for your X3 E83 prior to shipping.

Diagram reference

Diagram position: 5

Search‑friendly phrases customers use

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