SKU: ASTLS-22-309
AST 11/2020+ BMW 4 Series Lowering Springs – 30mm Front / 25mm Rear
AST Lowering Springs deliver a 30mm front and 25mm rear drop for 2021+ BMW 4 Series Coupe Convertible and Gran Coupe models including G22 G23 G26 chassis. These direct OEM replacements lower the center of gravity for sharper handling while keeping the ride comfort of stock springs. Vehicle-specific engineering ensures perfect fit and progressive rates for balanced performance on daily drives or track days.
Key Features
- Precise Drop Amounts: 30mm front and 25mm rear lowering tailored for BMW 4 Series to improve stance aerodynamics and cornering without sacrificing ride quality
- Progressive Spring Design: Balances firmness and compliance for responsive handling and OEM-like comfort across varied road conditions
- Premium Materials and Construction: Made with high-grade steel coiled on Wafios machines for durability and consistent performance over thousands of miles
- Vehicle-Specific Development: Engineered exclusively for each BMW 4 Series model ensuring bolt-on fitment and no alignment issues
- Lifetime Warranty: Covered against breakage for complete confidence in long-term reliability
Product Notes
- Direct replacement for OEM springs no additional modifications required
- Pair with OEM or upgraded shocks for best results
- Packaged to prevent damage ships in 18 x 6 x 6 inch box
Installation Notes
- Professional installation recommended.
- Requires spring compressor tool and alignment after install
- Compatible with factory strut mounts and hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2025 | BMW | 4 Series | 430i Coupe (G22) |
| 2021-2025 | BMW | 4 Series | 430i xDrive Coupe (G22) |
| 2021-2025 | BMW | 4 Series | M440i Coupe (G22) |
| 2021-2025 | BMW | 4 Series | M440i xDrive Coupe (G22) |
| 2021-2025 | BMW | 4 Series | 430i Convertible (G23) |
| 2021-2025 | BMW | 4 Series | 430i xDrive Convertible (G23) |
| 2021-2025 | BMW | 4 Series | M440i Convertible (G23) |
| 2021-2025 | BMW | 4 Series | M440i xDrive Convertible (G23) |
| 2022-2025 | BMW | 4 Series Gran Coupe | 430i Gran Coupe (G26) |
| 2022-2025 | BMW | 4 Series Gran Coupe | 430i xDrive Gran Coupe (G26) |
| 2022-2025 | BMW | 4 Series Gran Coupe | M440i Gran Coupe (G26) |
| 2022-2025 | BMW | 4 Series Gran Coupe | M440i xDrive Gran Coupe (G26) |
Why Choose AST?
- Proven across 3000+ vehicle models from 1966 to 2023
- Hand-built quality with advanced coiling technology
- Direct OEM fitment for seamless integration
Frequently Asked Questions
- Q: Does this fit my 2022 BMW M440i xDrive Coupe?
A: Yes ASTLS-22-309 fits all 2021+ BMW 4 Series G22 G23 G26 including M440i xDrive Coupe with 30mm front 25mm rear drop - Q: What material are these springs made from?
A: High-strength steel coiled on precision Wafios machines for corrosion resistance and longevity - Q: What does the lifetime warranty cover?
A: Full protection against spring breakage under normal use no registration needed
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure box 18 x 6 x 6 inches
- Weight: 12 lbs
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