Transform the stance, handling, and versatility of your BMW X3M or X4M with the AST Adjustable Lowering Spring Kit. Engineered for precision and control, this system allows you to fine-tune ride height even after installation—giving you the flexibility to achieve the perfect balance between aggressive looks and everyday drivability.
Unlike fixed-height springs, AST’s design lets you dial in the exact height you want, whether you’re optimizing for track performance or personalizing your street setup—all without replacing your factory dampers.
Fully compatible with BMW’s adaptive dampers and driver-assist systems, the kit maintains OEM ride quality and electronic functionality while enhancing steering response, cornering stability, and overall road presence.
Product Details
- Height Adjustment Range:
- Front: 0–40 mm
- Rear: 0–35 mm
- Designed for BMW F97 X3M / F98 X4M (including Competition models)
- Progressive spring rates for a smooth yet responsive ride
- Fully compatible with factory adaptive dampers / EDC
- Each spring is blocked and computer-tested to minimize initial settling
- Corrosion-resistant coating ensures long-term durability
- Lowers the center of gravity, sharpens handling, and improves aesthetics
Included Components
- 2 X Front adjustable lowering springs
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2 X Rear adjustable lowering springs
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1 X Adjustment collars and locking hardware
