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AST AST 11/2020- BMW 4 Lowering Springs - 25mm/20mm
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AST 11/2020- BMW 4 Lowering Springs - 25mm/20mm

AST
ASTASTLS-22-310
ASTLS-22-310
Lowering Springs
1 Units In Stock - Ships Next Business Day
$ 365.10 $ 328.59
$ 328.59

SKU: ASTLS-22-310

AST 11/2020+ BMW 4 Lowering Springs - 25mm/20mm

AST Lowering Springs lower the center of gravity on 2021+ BMW 4 Series Coupe Convertible and Gran Coupe models by 25mm front and 20mm rear. These direct OEM replacements maintain familiar ride comfort while sharpening handling and road feel. Vehicle-specific engineering ensures perfect fit and progressive performance for daily driving and spirited use.

Key Features

  • Precise Drop Specs: 25mm front 20mm rear reduction improves stance and cornering stability without sacrificing daily usability
  • Progressive Spring Design: Variable rates deliver smooth compliance over bumps paired with firm control during aggressive maneuvers
  • Vehicle-Specific Development: Tailored rates and dimensions for each BMW 4 Series variant from 11/2020 production onward
  • Premium Construction: High-tensile spring steel coiled on Wafios machines for durability and consistent performance
  • Lifetime Warranty: Guaranteed against breakage covering peace of mind across 3000+ vehicle applications since 1966

Product Notes

  • Complete front and rear spring set for straightforward replacement
  • Perform wheel alignment after installation for optimal tire wear and handling
  • Pairs with factory or aftermarket shocks box dimensions 18in x 8in x 8in

Installation Notes

  • Professional installation recommended.
  • Requires spring compressor tool for safe OEM spring removal.
  • Fully compatible with BMW factory struts mounts and hardware.

This Part Fits

Year Make Model Submodel
2021+ BMW 4 Series 430i Coupe (G24)
2021+ BMW 4 Series 430i xDrive Coupe (G24)
2021+ BMW 4 Series M440i Coupe (G24)
2021+ BMW 4 Series M440i xDrive Coupe (G24)
2022+ BMW 4 Series 430i Convertible (G23)
2022+ BMW 4 Series 430i xDrive Convertible (G23)
2022+ BMW 4 Series M440i Convertible (G23)
2022+ BMW 4 Series 430i Gran Coupe (G26)
2022+ BMW 4 Series 430i xDrive Gran Coupe (G26)
2022+ BMW 4 Series M440i Gran Coupe (G26)
2022+ BMW 4 Series M440i xDrive Gran Coupe (G26)

Why Choose AST?

  • Proven suspension expertise across decades of BMW applications
  • High-strength materials resist sagging for long-term ride height retention
  • Exact engineering matches OEM tolerances for bolt-on simplicity

Frequently Asked Questions

  • Q: Will these fit my 2022 BMW M440i xDrive Gran Coupe?
    A: Yes fits all 11/2020+ BMW 4 Series Coupe Convertible Gran Coupe submodels including M440i xDrive with 25mm front 20mm rear drop
  • Q: What material are the springs made from?
    A: High-tensile chrome silicon steel coiled on precision Wafios machines for fatigue resistance and longevity
  • Q: What does the warranty cover?
    A: Lifetime protection against manufacturing defects and breakage when installed and used properly

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Securely boxed set 18 x 8 x 8 inches
  • Weight: 15 lbs

Request For Information

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