H&R Sport Sway Bar Kit – BMW 540i xDrive/M550i xDrive (G30, B58/N63)

OVERVIEW

H&R's Sport Sway Bar Kit for the xDrive-equipped G30 5-Series upgrades both the front and rear anti-roll bars over the factory units, increasing torsional stiffness to reduce body roll under cornering load. A stiffer bar keeps more of the tire's contact patch planted through a corner, sharpening turn-in and giving the chassis a flatter, more controlled feel without altering ride height.

The kit is a direct bolt-on using the factory mounting locations and reuses the factory end links, and both bars are multi-hole adjustable so the front-to-rear roll-stiffness balance can be tuned to the driver's preference. This is the xDrive-specific part number, engineered around the all-wheel-drive front subframe and suspension geometry.

SPECS

• Front bar: 34mm, hollow, multi-hole adjustable
• Rear bar: 25mm, hollow, multi-hole adjustable
• Construction: cold-formed tubular steel, protective finish
• Increases torsional stiffness front and rear versus the factory sway bars to reduce body roll
• Does not change ride height, spring rate, or damping
• Sold as a complete Front & Rear Set only
• xDrive application only

PARTS INCLUDED

• H&R front and rear adjustable sway bars
• New mounting bushings and hardware included
• See the fitting instructions supplied in the box for the full bill of materials

TECH RESOURCES

Additional Parts Required

• None. H&R's sway bar kit ships complete with the bushings and hardware needed for installation; the factory end links are reused.
• Installer-supplied tools: jack and stands, standard hand tools, and a torque wrench.

Installation

• Illustrated fitting instructions are included in the box with the sway bar kit. H&R does not publish a separate per-application installation PDF for this sway bar; the technical sheet linked below covers spring-specific topics (bumpstop trimming, spring identification) and is not applicable to this sway bar.
• H&R Warranties & Claims (PDF) — official H&R warranty terms, coverage periods and claim procedure.

Notes

• ECS Tuning independently confirms part 72654-2 for the 540i xDrive (B58) via its own fitment-verified product listing. The M550i xDrive fitment could not be independently corroborated on ECS Tuning or Turner Motorsport — neither site's M550i xDrive sway-bar category lists an H&R part number at all. The M550i xDrive shares the G30 platform and front/rear suspension hardpoints with the 540i xDrive, which is the basis for including it here, but this should be confirmed directly with H&R before relying on it for an M550i xDrive sale.

PART NUMBER

• 72654-2 — Front & Rear Set (xDrive)

VEHICLE APPLICATIONS