The Bilstein B4 OE Replacement (DampTronic) shock absorber is made for the rear right of the 2018-2023 BMW M550i xDrive. Built around a 36mm monotube design, it is a direct OE replacement for the electronically adjustable dampers fitted to many European vehicles.
Part number: 23-400481
Bilstein shock absorber.
Bilstein B4 OE Replacement (DampTronic) dampers are direct OE replacements for the electronically adjustable dampers found on many European brand vehicles. Bilstein B4 OE Replacement (DampTronic) dampers are the ideal choice for the driver looking to restore the original performance and handling of their vehicle, with the added benefit of world-famous Bilstein quality.
Shocks are matched to a ride height range — confirm the lift height on the vehicle before ordering.
Use the vehicle selector to confirm your exact year and configuration.
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Bilstein |
| Part number | 23-400481 |
| Finish | Black Paint |
| Shipping carton | 29.55 × 7.9 × 7.9 in (75 × 20 × 20 cm) |
| Shipping weight | 6.8 kg (15 lb) |
| Series | B4 OE Replacement (DampTronic) |
| Boot included | No |
| Spring seat included | No |
| Internal design | Twintube |
| Category | Suspension & Lift |
More in Bilstein.
From MapleTorque customers
Awesome Send an email get reply very promptly... Send an other email weekend time ... Also get reply immediately... Alex take care of the customer to make sure everything going good during the transaction... #1 2026 Keep continu...
Quick shipping and very smooth transaction and I will certainly be checking here for future needs
Excellent shopping experience with MapleTorque! Alex was incredibly responsive, friendly, and genuinely committed to customer satisfaction. He personally helped me with pricing, made the purchase process easy, and even followed up after ...
New arrivals, restocks and fitment tips — straight from the counter.
