H&R Sport Sway Bar Kit – BMW 330i/430i (G20/G22/G23, B46/B58), RWD

OVERVIEW

H&R's Sport Sway Bar Kit for the rear-wheel-drive G20/G22/G23 3 and 4 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 rear-wheel-drive-specific part number; the xDrive-equipped versions of these same models take a different H&R part number.

SPECS

• Front bar: 26mm, hollow, multi-hole adjustable
• Rear bar: 19mm, 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
• Rear-wheel-drive application only — a separate H&R part number covers the xDrive versions of these models

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

• Fitment conflict found in vendor/retailer sources — resolved to the narrower reading. ECS Tuning's own product page for part 72462 explicitly states "Does not fit M340i." A different retailer (Bimmerworld) titles its listing of the same part number as the RWD kit for "330i, 330e, M340i, 430i, M440i," which would include M340i. Because ECS Tuning's statement is the more specific, vendor-sourced claim and directly contradicts the M340i inclusion, this listing uses the narrower, non-M340i fitment. Recommend confirming directly with H&R before selling this part number against an M340i.
• This is the RWD-specific part number; do not use on an xDrive-equipped 330i, M340i, 430i, or M440i — see the separate xDrive listing (part 72462-2).

PART NUMBER

• 72462 — Front & Rear Set (RWD)

VEHICLE APPLICATIONS