Powerflex Rear Anti Roll Bar (ARB) Mounting Bushes 12mm (Pair) for BMW 1 Series E81 E82 E87 E88 | Polyurethane Sway/Stabiliser Bar Bush Kit | PFR5-4609-12

Rear Roll Bar Mount Bush Kit 12 mm for BMW 1 Series E81 E82 E87 E88

Part number: PFR5-4609-12

Transform the way your E8x chassis drives with this premium rear roll bar mount bush set. Engineered from performance-grade poly material, these bushes replace tired factory rubber to deliver crisper turn-in, flatter cornering and a more planted rear axle. We have installed this kit on our own cars and for many customers, and the feedback is consistent – tighter chassis feel, better stability and confidence on fast road and track.

• Vehicle platform: BMW 1 Series E81 E82 E87 E88
• Bar size: 12 mm rear bar only. Please measure before ordering.
• Location: Rear bar to chassis mounts
• Contents: Pair of bushes
• Diagram reference: 10
• Warranty: Powerflex Lifetime Warranty

What you will feel

• Cleaner, more precise rear axle control under load
• Reduced bush deflection for consistent roll control
• Improved grip and stability that helps the car rotate predictably
• Long-lasting performance thanks to polyurethane that resists oil, salt and heat
• Great value chassis upgrade that supports even tyre wear

Why this upgrade works

Soft, ageing rubber allows the bar to move and delays the bar’s effect. This high-durometer poly bush keeps the bar located so it can work immediately, giving sharper response without a harsh ride. It is a direct swap for the OE mounts and is designed for longevity, making it ideal for daily drivers, weekend blasts and track days alike.

Fitment notes

• Confirm your rear bar diameter is 12 mm for correct fitment.
• Direct replacement for original rear bar mounting bushes on compatible E8x models.
• Useful BMW references for comparison: 33536765584, 33556761001.

Professional installation

For the best result and correct torqueing at ride height, we recommend professional fitting. MJ Modifications in Warwickshire can install and set up this kit for you. Request a quote or advice at info@mjmodifications.co.uk.

Search-friendly terms customers use

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Choose this kit if you want an easy, proven way to sharpen your BMW 1 Series. It is a simple swap with a big payoff in steering precision and rear-end composure, backed by the Powerflex Lifetime Warranty.