Powerflex Rear Anti Roll Bar Mounting Bushes 18mm (Pair) - BMW Z4M E85/E86 2006-2009 - Polyurethane ARB/Sway Bar - PFR5-504-18

Rear stabiliser bar bush set 18 mm for BMW Z4 M E85 and E86 2006 to 2009

Transform the way your Z4 M corners with this uprated polyurethane rear stabiliser bushing kit. By replacing the ageing rubber at the bar-to-chassis mounts, these bushes control flex, hold geometry steady under load, and deliver precise, confidence-inspiring handling on fast road and track days. Expect crisper turn in, flatter cornering and more predictable grip. Built for longevity and backed by the Powerflex Lifetime Warranty.

• Direct replacement pair for the rear bar-to-chassis clamp locations, 18 mm bar size
• Polyurethane construction resists oil, road salt and heat far better than standard rubber
• Improves stability under braking and acceleration for more consistent tyre contact
• Reduces unwanted movement without harshness, suitable for daily driving
• Proven on our own builds and customer Z4 Ms with consistently excellent feedback

Fitment

BMW Z4 M E85 Roadster and E86 Coupé, model years 2006 to 2009. This kit is for an 18 mm rear bar. Please measure your rear sway bar diameter before ordering to ensure the correct size.

What you receive

• Quantity: 2 bushes
• Diagram reference: 4
• Manufacturer part number: PFR5-504-18
• BMW OE cross-reference: 33551138104

Why choose this upgrade

• Holds alignment more accurately for sharper steering and balanced cornering
• Enhances grip and predictability, helping reduce uneven tyre wear
• Durable compound for long-term value with a Lifetime Warranty

Installation and support

Can be fitted by a competent enthusiast, though professional installation is recommended for best results. For expert fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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