AST Adjustable Lowering Spring Kit For BMW G21 M340i xDrive/M340i xDrive plug in Hybrid | ALS Kit

Achieve the perfect stance and ride balance with the AST Adjustable Lowering Spring Kit for the BMW G21 M340i xDrive and M340i xDrive Plug-In Hybrid. This premium ALS kit allows you to fine-tune your vehicle’s height to your exact preference, offering both aesthetic appeal and enhanced performance without compromising everyday comfort.

Unlike fixed lowering springs, AST’s adjustable design uses precision-engineered height adjusters that let you set your desired ride height even after installation. Developed in the Netherlands using high-grade spring steel and advanced Wafios coiling technology, these springs deliver exceptional durability, consistency, and ride refinement.

The progressive-rate design ensures an ideal balance between comfort and handling — reducing body roll, improving cornering response, and maintaining the refined feel expected from OEM-quality components. Whether you’re after a subtle drop or a sportier stance, AST’s adjustable system provides the flexibility to make your BMW look and perform exactly how you want.

Key Features

• Designed for BMW G21 M340i xDrive & M340i xDrive Plug-In Hybrid

• Fully adjustable ride height – fine-tune your drop even after installation

• Progressive-rate spring design for optimal comfort and control

• Reduces body roll and enhances handling without sacrificing ride quality

• Manufactured in the Netherlands using premium-grade materials

• Developed with Wafios coiling machines for precision and consistency

• Direct OEM replacement for straightforward installation

• Maintains compatibility with factory dampers and adaptive systems

• Front lowering range: ≈ 5–35mm

• Rear lowering range: ≈ 5–40mm

Compatibility

• BMW G21 M340i xDrive Touring (2020–2025)

• BMW G21 M340i xDrive Plug-In Hybrid Touring (2020–2025)