Dinan Suspension Components

Fits 2018–2025 BMW X4 M40i

Part #: D100-0942

Overview

The Dinan Coil Spring Set for the BMW X4 M40i is a high-performance suspension upgrade designed to enhance handling, stability, and aesthetics. Crafted specifically for the G02 X4 M40i model years 2018 through 2025, this spring set is ideal for enthusiasts seeking a more aggressive stance and improved driving dynamics. By carefully calibrating spring rates, Dinan springs help reduce body roll, resulting in more precise steering response and a confident driving experience. Additionally, these springs lower the vehicle's ride height, optimizing suspension geometry for better handling and a sportier appearance. Whether you're looking to improve cornering, reduce squat under acceleration, or achieve a more commanding stance, this coil spring set is engineered to support your performance goals.

Key Features

Designed with durability and performance in mind, the Dinan coil springs feature:

• High tensile chrome silicon wire for strength and resilience
• Precision CNC wound manufacturing for consistent spring rates
• Shot-peened for stress relief and long-lasting performance
• Lowered ride height for improved suspension geometry and stance
• Enhanced control over body roll and vehicle stability
• Optimized for high-speed handling and cornering confidence
• Engineered specifically for the BMW X4 M40i (2018–2025)

Construction & Design

The springs are CNC wound using high tensile chrome silicon wire, a material chosen for its excellent strength and fatigue resistance. Shot-peening treatment further enhances durability by relieving internal stresses, ensuring the springs maintain their performance over the vehicle’s lifespan. The precise manufacturing process guarantees consistent spring rates and reliable ride quality, supporting both daily driving and spirited performance.

Driving Feel & Feedback

These performance springs provide a more responsive and controlled driving experience by reducing body roll and improving suspension geometry. The increased stiffness minimizes suspension compression during acceleration and braking, resulting in a more planted feel. The lowered stance not only enhances the vehicle’s visual appeal but also improves handling feedback, giving the driver greater confidence at all speeds.

Installation & Fitment

Installation involves replacing the factory springs with the Dinan coil springs, typically requiring basic suspension tools. Proper alignment is recommended after installation to ensure optimal handling and tire wear. The springs are designed as a direct bolt-in upgrade for the G02 X4 M40i model years 2018–2025, ensuring a straightforward upgrade process for qualified technicians or experienced enthusiasts.

What’s Included

The package includes a complete set of front and rear coil springs, engineered to work together for balanced handling and stance. Hardware or additional components are not included, as these springs are designed for direct replacement of OEM parts.