AST 2019+ BMW 1 Series F40 5100 Series Coilovers

Already running a performance setup on your BMW X1? This AST 5100 Series coilover kit pairs well with other suspension upgrades. These coilovers are built to give you better road balance for daily driving, maximizing grip by controlling your car's rebound and ride height. They include springs and are designed to use your OEM top mounts.

The front dampers are a coilover design, while the rear maintains a divorced setup, similar to the factory setup. This approach results in a more comfortable ride that still achieves excellent road balance. The kit features vehicle-specific, fixed spring rates for the rear. AST's extensive development and testing process informs the initial setup. You can easily fine-tune settings to your preference by adjusting the rebound knob or changing the ride height. The monotube design uses a large piston for precise rebound damping control, preventing aeration and foaming for more responsive valving. These high-pressure dampers are also rebuildable at a certified AST service center.