Bilstein B4 OE Replacement Suspension Strut Assembly for 2021 BMW M440i xDrive missingapp finished with a clear gloss

finished with a clear gloss coating that enhances its visual appeal and provides additional protection against UV rays and minor impacts

Bilstein's OE Replacement dampers are trusted by professionals and enthusiasts alike

OEM-style carbon fiber accessory that complements the sporty character of their F22 or M2

Adjustable ride height to lower your vehicle's center of gravity and improve handling dynamics

OE-grade construction with high-quality steel components for durability and longevity

Bilstein B4 OE Replacement Suspension Strut Assembly for 2021 BMW M440i xDrive missingapp finished with a clear glossBilstein B4 OE Replacement Suspension Strut Assembly 2021 BMW M440i xDrive Part #: 22 306623 Overview The Bilstein B4 OE Replacement Suspension Strut Assembly is designed specifically for the 2021 BMW M440i xDrive, offering a perfect balance of factory like ride quality and reliable performance. Engineered to meet or exceed original equipment standards, these struts restore your vehicle's handling, comfort, and safety to factory specifications.