Performance M
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)
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)
Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.
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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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