The Bilstein 18-21 BMW X3 / 19-21 X4 B6 Performance Strut Front Right is an advanced performance strut designed for the BMW X3 and X4 models, from 18-21. This strut is designed to provide superior handling and control, as well as improved ride quality. It features a monotube gas pressure construction, and is designed to be corrosion resistant. The strut is also designed to be adjustable for rebound and compression, allowing for a custom tune. This strut is an ideal choice for those looking to upgrade their suspension setup for improved performance and comfort.