Ultra Racing Rear Anti-Roll Bar / Sway Bar (Stabiliser/Stabilizer) for BMW 1 Series F20 2011-2019 – ARB Handling Upgrade, Rear Torsion Bar – Reduce Body Roll, Sharper Cornering, Fast Road & Track

Unlock sharper handling for your BMW F20. This rear stabiliser bar from Ultra Racing is a proven chassis upgrade that tightens body control, boosts cornering confidence and delivers a more planted, predictable rear end on B-roads, fast road and track days. If you are chasing flatter cornering, cleaner turn-in and a more neutral balance, this is the suspension tweak your 1 Series has been waiting for.

Designed specifically for the BMW 1 Series F20 platform, this back sway bar enhances roll resistance at the rear axle to reduce lateral weight transfer. The result is crisper responses, more grip when you lean on the car through sweeping bends and a calmer, more composed feel over quick direction changes.

• Up to a 40 percent gain in chassis composure during cornering compared to stock setup
• Helps dial out front-end push for a more neutral, confidence-inspiring balance
• Improves stability under hard braking and mid-corner bumps
• Noticeably reduces body lean for faster, more consistent lap times
• Ideal for fast road, spirited driving and track-day setups

Why this upgrade works

The increased roll stiffness at the rear curbs unwanted chassis movement, keeping the tyres in a better contact patch and letting the dampers do their best work. You will feel cleaner rotation on turn-in and stronger traction on exit without making the ride harsh when paired with quality springs and dampers.

Build quality you can trust

• Material: lightweight high strength carbon steel for durability and precise torsional control
• Finish: gloss solid white coating that looks OEM-plus and resists corrosion
• Vehicle-specific geometry for the BMW F20 for a snug, secure fit
• Lifetime limited warranty against manufacturing defects

Real-world results

We run Ultra Racing chassis parts on our own cars and customer builds. Feedback is consistently positive, with drivers reporting flatter cornering, better rear-end control and a more engaging drive without compromising day-to-day usability.

Perfect for

• BMW F20 owners seeking a handling upgrade without changing the entire suspension
• Fast road and track-day enthusiasts wanting improved roll control
• Drivers aiming for a more connected, predictable feel from the rear axle

Professional installation

For fitting and setup, book in with MJ Modifications in Warwickshire. Our team can supply, install and align your suspension package for optimum results. Request a quote at info@mjmodifications.co.uk.

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