This set replaces both factory anti-roll bars with tubular high tensile alloy steel bars tuned to the specific chassis, 25mm at the front against a 23.1mm stock bar and 19mm at the rear against 18mm. Roll stiffness climbs 56% in front and 54 to 66% at the rear, keeping the body much closer to level while still allowing the small amount of roll that builds mechanical grip and tells the driver what the tires are doing. The rear bar is 2-hole adjustable, so handling balance can be tuned toward comfort or toward a sharper front end. Bars are powder coated for corrosion resistance and polyurethane bushings and grease are supplied. Installation requires dropping the subframe.
Specifications
| Type | Adjustable anti-roll (sway) bar set |
| Position | Front and rear |
| Diameter | 25mm front (23.1mm stock), 19mm rear (18mm stock) |
| Material | High tensile alloy steel, tubular hollow construction |
| Finish | Powder coated |
| Adjustment | Rear bar, 2-hole adjustable |
| Roll Stiffness | 56% stiffer front, 54-66% stiffer rear |
| Hardware Included | Polyurethane bushings and grease |
| Warranty | Remainder of the vehicle manufacturer's new car limited warranty (up to 4 years/50,000 miles), or 2 years/unlimited miles from date of purchase, whichever is greater |
| Part Number | D120-0635 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2026 | BMW | 230i xDrive | Base |
| 2019-2026 | BMW | 330i xDrive | Base |
| 2021-2026 | BMW | 430i xDrive | Base |
| 2023-2026 | BMW | 430i xDrive Gran Coupe | Base |
| 2022-2026 | BMW | M240i xDrive | Base |
| 2020-2026 | BMW | M340i xDrive | Base |
| 2021-2026 | BMW | M440i xDrive | Base |
| 2022-2026 | BMW | M440i xDrive Gran Coupe | Base |
Shipping
- Orders placed before 3 PM ET typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty
