Bilstein B8 5100 Front Coilover Shock for 0–2.5 in Lift for 4th-Gen 4Runner (2003–2009)

The Bilstein B8 5100 Front Coilover Shock is engineered for drivers who want improved front suspension performance while retaining their factory coil springs. Its adjustable spring seat allows the front suspension to be leveled or lifted without replacing the original springs, making it a practical upgrade for both daily driving and weekend adventures.

Multiple snap-ring grooves machined into the shock body allow the factory spring seat to be repositioned at several heights. This design supports front lift settings from stock height up to 2.5 inches using the original coil springs.

The B8 5100 shock uses Bilstein's proven high-pressure monotube construction, providing a larger effective piston area. This design delivers consistent damping performance, improved heat dissipation, and dependable control.

Self-adjusting deflective disc valving responds quickly to changing road and trail conditions. The result is excellent low-speed body control while maintaining ride comfort over rough pavement, washboard roads, and uneven terrain.

By optimizing front geometry and increasing available wheel travel, the B8 5100 improves steering response, stability, and confidence. It performs equally well during everyday commuting, towing, overland travel, and off-road exploration.