Hardrace 28mm Adjustable Front Anti Roll Bar Ford Focus Mk4 18+

Hardrace Front Sway Bar 28mm for Ford Focus Mk4 and Focus ST 2.3 – 2-Hole Adjustable Hollow Bar, 5-Piece Kit

Hardrace's 28mm front sway bar for the Ford Focus Mk4 is a hollow, heat-treated replacement for the factory front bar. It reduces body roll and makes the front end feel tighter and more precise, which suits both fast road driving and track days.

The sway bar is 2-way adjustable, with two holes at each end, so you can set it softer or firmer to tune the car's balance. It is designed as a direct OE replacement and comes as a five-piece kit for the Focus's original mounts.

It fits non-ST Focus Mk4 models and the 2.3 ST. Hardrace also makes Mk4 rear sway bars for torsion-beam cars, multi-link cars, the ST hatchback and the ST estate, so you can build a matched pair.

Key Features

• 28mm front bar to reduce body roll and sharpen turn-in
• 2-way adjustable with two holes at each end to tune front roll stiffness
• Hollow construction keeps weight down
• Heat treated for strength
• Direct replacement using the factory mounting points
• Fits non-ST Focus Mk4 models and the Focus ST 2.3
• Complete 5-piece set
• Replacement bushes available separately

What's in the Kit?

• 1 x 28mm adjustable front anti-roll bar
• Mounting bushes and fittings (5 pieces in total)

Fitment

• Ford Focus Mk4 (2018-2025), non-ST models, hatchback, saloon and estate
• Ford Focus ST Mk4 (2019-2025), 2.3 EcoBoost

Not suitable for: Focus ST Mk4 models other than the 2.3 EcoBoost, such as the 2.0 EcoBlue diesel ST, which Hardrace's note does not cover, or the Focus Mk3, which needs the Hardrace 28mm adjustable front anti-roll bar for Focus Mk3.

Installation

Fit with the car safely supported on a ramp or axle stands. Undo the drop links and the bush brackets, then remove the original bar. Fit the Hardrace bar with its new bushes, refit the brackets and drop links, and tighten everything to the vehicle manufacturer's torque figures with the suspension loaded at normal ride height. If you tighten the bushes with the wheels hanging, they are pre-loaded and can squeak or wear early. Set both ends of the bar to the same hole. Start on the softer hole and go firmer only if you want less front roll, as it also adds understeer. No wheel alignment is needed for the bar alone. We recommend professional fitting.

Upgrade Further

• Hardrace 25.4mm rear anti-roll bar for Focus ST Mk4 hatchback
• Hardrace 25.4mm rear anti-roll bar for Focus ST Mk4 estate
• Hardrace 22mm rear anti-roll bar for Focus Mk4 with multi-link rear axle
• Hardrace 17mm rear add-on anti-roll bar for Focus Mk4 with torsion beam rear axle
• Hardrace replacement bushes for this front bar

Does it fit the Focus ST Mk4?

Yes, the 2.3 EcoBoost ST. Hardrace's note says the bar is for non-ST models and the 2.3 ST, so the 2.0 EcoBlue diesel ST isn't covered.

Does it fit the ST-Line, Titanium and Active models?

Hardrace lists the bar for all non-ST Focus Mk4 models, so ST-Line, Titanium, Zetec and Active versions are covered. The rear axle type doesn't matter for this front bar.

Which rear bar should I pair it with?

It depends on your rear axle. Torsion-beam cars take the 17mm add-on bar, multi-link non-ST cars take the 22mm rear bar, and the ST has its own 25.4mm bars for the hatchback and estate.

Will a stiffer front bar add understeer?

On its own, a little, because the Focus is front-wheel drive. Fitting a Hardrace rear bar as well cuts roll at both ends and keeps the car's balance neutral or slightly more agile.

Which hole should I start on?

Start on the softer hole and set both sides the same. Only move to the firmer hole if you want less front roll and accept a touch more understeer.

Can I reuse my standard drop links?

Yes, the bar is designed as a direct replacement. If the car is lowered, check that the drop links aren't at an extreme angle at rest.

Do I need a wheel alignment?

No. An anti-roll bar doesn't change the alignment settings. You only need one if you change the springs or ride height at the same time.

Is it road legal?

Yes, it is a bolt-on suspension upgrade. Remember to tell your insurer about any modifications.