Powerflex Rear Sway/Anti-Roll/Stabiliser Bar Mount Bushes 21.5mm (Pair) - PFR5-4609-21.5 Polyurethane ARB D-Bush Clamp Bushing Kit for BMW E46 M3 (3 Series)

PFR5-4609-21.5 Polyurethane Rear Sway Bar Mount Bush Kit 21.5 mm for BMW M3 E46

Give your E46 M3 rear end the precision it deserves with this Powerflex polyurethane rear stabiliser bar mount bush kit, size 21.5 mm, part number PFR5-4609-21.5. By replacing tired factory rubber with performance poly bushes, you unlock crisper chassis response, steadier cornering and more consistent roll control on fast road and trackday use. Expect a tighter, more connected feel and confidence every time you load the rear axle.

Why this upgrade works

• Controls unwanted movement at the rear sway bar mounts for predictable handling
• Sharper turn in, better mid-corner support and improved traction on exit
• Keeps geometry stable under braking and hard acceleration
• Durable polyurethane resists oil, salt and road grime better than OE rubber
• Can reduce uneven tyre wear thanks to more consistent alignment control
• Backed by the Powerflex Lifetime Warranty

Fitment and sizing

• Vehicle: BMW M3 E46 rear axle
• Location: rear stabiliser bar mounting points, clamp bushes
• Bar diameter: 21.5 mm - please measure your rear ARB before ordering
• Models: M3 only

What you receive

• Quantity: 2 bushes - sold as a pair
• Part number: PFR5-4609-21.5
• Diagram reference: 4
• OEM cross reference: 31352229711

Proven on road and track

We run these bushes on our own builds and customer E46 M3s with excellent results. Feedback is consistently positive, highlighting reduced body roll, a more planted rear end and a noticeable lift in steering response and overall chassis precision.

Professional fitting

Want it installed right first time? Book expert fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quotation and availability.

Search-friendly terms

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