Dinan D100-0934 Performance Spring Set for BMW 330i M340i M440i

The Dinan D100-0934 Performance Spring Set is engineered to enhance the handling dynamics and appearance of 2019-2025 BMW 330i, M340i, and M440i models with xDrive all-wheel drive. These precision-manufactured lowering springs deliver an aggressive stance while maintaining ride quality and compatibility with factory suspension components.

Key Features:

• Preset to prevent spring sag and maintain consistent ride height over time
• Substantial reduction in body roll for improved cornering stability
• Compatible with both conventional and factory electronic adaptive dampers
• Manufactured to Dinan's exacting quality standards for durability and performance

Model-Specific Lowering and Spring Rates:

• M340i RWD & xDrive: 1 inch drop front and rear
• M340i RWD: 15% increase in spring stiffness front and rear
• M340i xDrive: Negligible change in front spring rate, 10% increase in rear
• 330i RWD: 1-1/8 inch front drop, 3/4 inch rear drop
• 330i xDrive: 5/8 inch front drop, 3/4 inch rear drop
• 330i Models: 7-95% increase in front spring rate and 34-92% increase in rear depending on factory spring configuration
• M440i xDrive: 1-1/8 inch front drop, 5/8 inch rear drop with negligible front spring rate change and 23% increase in rear

This spring set transforms the driving experience by lowering the center of gravity and tightening suspension response, delivering the more connected feel BMW enthusiasts demand while maintaining daily drivability.