The Bilstein B8 8112 (ZoneControl CR) is a high-performance bolt-on suspension kit designed for serious off-road terrain. It features Bilstein’s revolutionary ZoneControl CR technology, providing position-sensitive damping with three stages of compression valving and two stages of rebound valving. This kit includes a heavy-duty 700lb/in spring rate coil-over to accommodate aftermarket bumpers, winches, or accessories. The kit consists of: 1x Front Right Coilover (47-310374 / 47-293677 depending on side assembly), 1x Front Left Coilover, 2x Bilstein 700lb/in Springs (E4-FD1-Z415B00), and all necessary mounting hardware. Features: 60mm remote reservoir for increased oil capacity, threaded body for adjustable ride height (0-2.5 inches of lift), and aerospace-grade components for extreme durability.