Dinan D100-0942 Performance Spring Set for BMW - X3 M40i X4 M40i

The Dinan D100-0942 Performance Spring Set transforms the handling dynamics of 2018-2025 BMW X3 M40i and X4 M40i models with precision-engineered suspension components. This complete spring upgrade delivers an aggressive stance while enhancing cornering performance and reducing body roll during spirited driving.

Key Features:

• Front and rear lowering of 7/8 inch (22mm) for improved aerodynamics and aggressive appearance
• 25% increase in spring rate front and rear for sharper handling response
• Substantial reduction in body roll during cornering and lane changes
• Springs preset to prevent sagging and maintain proper ride height over time
• Includes two front linear rate springs and two rear dual rate springs
• Engineered specifically for BMW X3 M40i and X4 M40i chassis dynamics

This spring set provides the foundation for a complete suspension upgrade and works seamlessly with Dinan's Ride Quality and Handling Kit (sold separately). The dual-rate rear springs provide progressive resistance for optimal balance between ride comfort and performance capability. Professional installation recommended to ensure proper fitment and alignment settings.