AST Suspension Lowering Springs (30mm/30mm TUV) - 2005-2009 BMW Z4 Roadster 2.0 (Z85)

The AST Suspension Lowering Springs for the 2005-2009 BMW Z4 Roadster 2.0 (Z85) are high-performance coil springs designed to lower the vehicle's ride height by 30mm. Constructed from premium high tensile chromium-silicone wire, these springs are carefully handpicked by AST engineers for their strength and consistency. Each spring undergoes a rigorous manufacturing process, including cold winding, heat treatment to enhance hardness and reduce internal stresses, and individual shot peening. The springs are phosphate treated and powder coated to ensure durability and resistance to corrosion, providing long-lasting performance. Featuring progressive rates on most vehicles, these springs improve handling, stability, and aesthetics while maintaining ride comfort.

Designed specifically for the 2005-2009 BMW Z4 (Z85) models, these lowering springs are a direct bolt-on upgrade that enhances the vehicle's stance and cornering capabilities. They are compatible with models equipped with the original Electronic Damping Control (EDC) system, offering a tailored fitment for street and spirited driving. The kit includes the set of springs necessary for installation, providing a straightforward upgrade for enthusiasts seeking improved handling and a lowered profile. Suitable for daily driving, street use, or track days, these springs deliver performance and durability, making them an ideal choice for BMW Z4 owners looking to optimize their vehicle's dynamics.