SKU: ASTLS-21-038
AST 07/2013-10/2020 BMW 4 XDRIVE Lowering Springs – 30mm/25mm
AST lowering springs lower the center of gravity on 2013-2020 BMW 4 Series xDrive models including F32 coupe F33 convertible F36 Gran Coupe by 30mm front 25mm rear. These direct OEM replacements maintain familiar ride comfort while improving handling and stability through progressive spring rates. Vehicle-specific design ensures precise fit and performance gains on 428i 430i 435i 440i xDrive variants.
Key Features
- Progressive Spring Design: Balances lowering with controlled ride quality for sharper cornering and reduced body roll on BMW 4 Series xDrive
- Vehicle-Specific Engineering: Developed exclusively for 07/2013-10/2020 BMW 4 xDrive models ensuring bolt-on compatibility without modifications
- Premium Materials: High-tensile steel coiled on Wafios machines for durability and corrosion resistance in demanding conditions
- Center of Gravity Reduction: 30mm front 25mm rear drop enhances traction aerodynamics and visual stance
- Lifetime Warranty: Guaranteed against breakage providing long-term reliability for track or street use
Product Notes
- Special order item allow 5-7 business days for processing
- Inspect alignment after installation to maintain handling
- Ships in protective box handles rough transit
Installation Notes
- Professional installation recommended.
- Direct swap for OEM springs no cutting or adapters required
- Compatible with factory struts and control arms torque to BMW specs
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2014-2016 | BMW | 428i xDrive | F32 Coupe |
| 2014-2017 | BMW | 435i xDrive | F32 Coupe |
| 2017-2020 | BMW | 430i xDrive | F32 Coupe |
| 2018-2020 | BMW | 440i xDrive | F32 Coupe |
| 2015-2016 | BMW | 428i xDrive Gran Coupe | F36 |
| 2015-2017 | BMW | 435i xDrive Gran Coupe | F36 |
| 2017-2020 | BMW | 430i xDrive Gran Coupe | F36 |
| 2018-2020 | BMW | 440i xDrive Gran Coupe | F36 |
| 2014-2016 | BMW | 428i xDrive Convertible | F33 |
| 2014-2017 | BMW | 435i xDrive Convertible | F33 |
Why Choose AST?
- Proven suspension expertise across 3000+ vehicle models since 1966
- Wafios precision coiling for consistent rates and longevity
- Lifetime breakage warranty backs every set
Frequently Asked Questions
- Q: Will these fit my 2017 BMW 430i xDrive F32 coupe?
A: Yes fits all 07/2013-10/2020 BMW 4 Series xDrive F32 F33 F36 models including 430i direct OEM replacement 30mm front 25mm rear drop - Q: What material are the springs made from?
A: High-tensile progressive spring steel coiled on Wafios machines for strength flexibility and rust resistance - Q: Does the lifetime warranty cover sagging or normal wear?
A: Covers breakage only preserves OEM-like comfort excludes manufacturing defects or abuse
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure cardboard box 20 x 10 x 8 inches
- Weight: 22 lbs
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