The Bilstein B8 8112 (Zone Control) is a high-performance bolt-on coilover designed for the front left corner. It features 5-stage compression valving and 3-stage rebound valving, delivering unparalleled comfort and bottom-out control. This module provides adjustable ride height (0-3.8 inches) and is fully rebuildable. **Package Includes:** 1x Shock Absorber (41-324158), 1x Eibach Coil Spring, 1x Reservoir Mounting Kit, 1x Billet Aluminum Upper Mount, 1x Lower Spring Seat, 1x Adjustment Tool.