Whiteline Adjustable Rear Sway Bar 24mm – 2013-2018 Ford Focus ST

Whiteline Adjustable Rear Sway Bar 24mm – 2013-2018 Ford Focus ST

Maximum Rear Roll Stiffness for the Mk3 Focus ST
The Whiteline BMR93Z is a 24mm 3-point adjustable rear sway bar for the 2013-2018 Ford Focus ST (Mk3). At 24mm, this is a significant step up from the factory rear bar for a front-wheel-drive hot hatch — it provides aggressive rear roll stiffness to reduce understeer tendency and sharpen the Focus ST’s corner entry behavior. Three adjustment positions allow fine-tuning within the performance range.

DETAILS

• 24mm 3-point blade adjustable rear sway bar
• Solid spring steel, silver powder coat
• Includes mount bushings and hardware
• 3 adjustment positions
• Fitment: 2013-2018 Ford Focus ST (Mk3 platform)
• Direct bolt-on installation

FWD Rear Bar and Understeer Reduction
On a front-wheel-drive platform like the Mk3 Focus ST, rear sway bar stiffness is one of the primary tools for reducing understeer. A stiffer rear bar increases the rear’s resistance to roll relative to the front — which allows the front to rotate more freely in corners. The 24mm BMR93Z provides the most aggressive rear roll stiffness option for Focus ST builds.

Three Positions for Balance Tuning
Start at the middle position for a balanced street and track improvement. If more rotation is needed, move to the outer position. If the rear starts feeling unstable on corner exit throttle application, ease back to the inner position. The three positions provide real tuning range on a platform where balance matters.

Complete With Matching Front Bar
Whiteline produces front sway bars for the Mk3 Focus ST. Pairing front and rear bar upgrades produces a more balanced result than rear-only — the BMR93Z works best when the front bar is also upgraded.

Why Choose Whiteline

Whiteline has been engineering suspension components from their facility in Australia since 1979. Every product in their catalog is developed with a clear goal: measurable improvement in handling, stability, and tyre contact. Whiteline’s polyurethane bushings, sway bars, control arms, and alignment correction kits are engineered using finite element analysis and validated on track before they reach the market. Their components are direct-fit, bolt-on solutions designed for enthusiasts who want real performance gains without fabrication or custom work.

The RallySport Take

The maximum rear stiffness option for the Mk3 Focus ST. Use it to reduce understeer on a platform that benefits directly from rear roll stiffness. Installation is a straightforward bar swap — remove the OEM bar, install the Whiteline unit with the provided polyurethane mount bushings, connect the endlinks. Start in the middle adjustment position and move from there. Adjustable endlinks are a worthwhile companion purchase if the car has been lowered, ensuring the bar operates at zero preload at the new ride height.

What’s in the Box

• 24mm 3-point blade adjustable rear sway bar
• Solid spring steel, silver powder coat
• Includes mount bushings and hardware
• 3 adjustment positions

Fitment