AST Suspension BMW X3M (F97) / X4M (F98) Adjustable Lowering Springs

AST Suspension BMW X3M (F97) / X4M (F98) Adjustable Lowering Springs

Height-adjustable AST spring kit for BMW F97 X3M and F98 X4M, including Competition applications, designed to improve stance and handling while retaining adaptive damper functionality.

Product Highlights

• Front height adjustment range: approximately 0–40 mm
• Rear height adjustment range: approximately 0–35 mm
• Progressive spring rates tuned for comfort and spirited handling
• Compatible with factory adaptive dampers / EDC
• Computer tested to help reduce initial settling
• Durable finish for corrosion and wear resistance

Manufacturer: AST Suspension
Part Number: ASTASTALS-21-015

Fitment & Installation

Verify year, model, chassis, drivetrain, trim and factory suspension configuration before ordering. Specifications and included hardware can vary by application. Professional installation and alignment are recommended.

Source note: Product features were matched to the corresponding AST listing from IND Distribution and rewritten for this catalog.

Frequently Asked Questions

Is this a genuine AST Suspension product?

Yes. This listing is for genuine AST Suspension part number ASTASTALS-21-015.

How should I confirm fitment?

Confirm the vehicle year, chassis, drivetrain, trim and factory suspension configuration shown in the listing before ordering. Contact Peter's Car Parts if your vehicle configuration differs.

Is professional installation recommended?

Yes. Professional suspension installation and a four-wheel alignment are recommended after installation or any significant ride-height change.