DINAN Performance Spring Set – BMW 330i / M340i / M440i xDrive (2019–2024)

DINAN Performance Spring Set – BMW 330i / M340i / M440i xDrive (2019–2024)

Transform your BMW’s stance and handling with the DINAN Performance Spring Set — engineered to deliver a lower, more aggressive profile while maintaining ride comfort and factory refinement. Dinan springs are precision-crafted to provide sharper handling, reduced body roll, and improved grip under all driving conditions, ensuring a perfect blend of aesthetics and performance.

Unlike typical lowering springs, Dinan designs their suspension systems holistically, pairing springs with bump stops and perches to preserve suspension travel and comfort. The result is a setup that enhances responsiveness, stability, and confidence without sacrificing daily drivability.

Performance Benefits:

• Lowered Ride Height:

  • M340i (RWD & xDrive): 1” front / 1” rear drop

  • M440i xDrive: 1 1/8” front / 5/8” rear drop

  • 330i xDrive: 5/8” front / 3/4” rear drop

  • 330i RWD: 1 1/8” front / 3/4” rear drop

• Improved Handling: Up to 15–90% increase in spring stiffness (depending on model) for sharper cornering response.

• Reduced Body Roll: Provides flatter cornering and enhanced steering feedback.

• CNC-Wound Chrome Silicon Springs: Shot-peened for maximum durability and resistance to sag.

• Compatible with Factory Electronic Shocks: Retains adaptive functionality where equipped.

Technical Features:

• Engineered for precision ride height and suspension geometry improvements

• Reduces squat during acceleration and dive during braking

• Pre-set design prevents spring fatigue or height loss over time

• Compatible with both conventional and adaptive damping systems

• Finished with corrosion-resistant coating for long-term reliability

Recommended Installation:

Dinan strongly recommends installing the corresponding Ride Quality and Handling Kit alongside the Performance Spring Set. This ensures proper suspension travel, ride comfort, and handling balance.

Note: Failure to install the matching kit may result in sub-optimal ride quality and handling characteristics. Warranty covers product defects only, not ride performance without the full system installed.

Vehicle Compatibility:

• BMW G20 330i (RWD & xDrive) – 2019–2024

• BMW G20 M340i (RWD & xDrive) – 2019–2024

• BMW G22 M440i xDrive – 2021–2024

SKU: D100-0934