SKU: ASTLS-22-118
AST 03/2014-07/2021 BMW 4 XDRIVE Lowering Springs – 40mm/35mm
AST lowering springs lower the center of gravity on 2014-2021 BMW 4 Series xDrive models including Coupe Convertible and Gran Coupe while maintaining OEM ride comfort. These progressive springs provide direct OEM replacement fitment for enhanced handling stance and performance on F32 F33 F36 chassis. Vehicle-specific design ensures balanced drop of 40mm front and 35mm rear for xDrive AWD geometry.
Key Features
- 40mm Front / 35mm Rear Drop: Lowers ride height precisely for xDrive models improving aerodynamics stability and aggressive stance without sacrificing daily drivability
- Progressive Spring Rate: Delivers linear response for sporty handling while retaining OEM-like compliance on rough roads
- Premium Wafios-Coiled Construction: Crafted from high-tensile steel on advanced Wafios machines for consistent performance and durability
- Direct OEM Replacement: Bolt-on installation matches factory dimensions no modifications required preserves suspension geometry
- Lifetime Warranty: Backed against breakage and sagging for long-term reliability on street or track
Product Notes
- Developed specifically for BMW 4 Series xDrive vehicles from 2014 to 2021
- Pair with OEM or performance shocks for best results
- Packed as complete front and rear spring set net weight 11.2 lbs
Installation Notes
- Professional installation recommended.
- Direct bolt-on replacement unload OEM springs before install
- Compatible with factory struts and mounts no additional hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2016 | BMW | 428i Gran Coupe | Base |
| 2015-2016 | BMW | 428i xDrive Gran Coupe | Base |
| 2015-2016 | BMW | 428i xDrive Coupe | Base |
| 2015-2016 | BMW | 428i xDrive Convertible | Base |
| 2014-2017 | BMW | 435i xDrive Coupe | Base |
| 2014-2017 | BMW | 435i xDrive Gran Coupe | Base |
| 2014-2017 | BMW | 435i xDrive Convertible | Base |
| 2017-2021 | BMW | 430i xDrive Gran Coupe | Base |
| 2017-2020 | BMW | 430i xDrive Coupe | Base |
| 2017-2021 | BMW | 440i xDrive Gran Coupe | Base |
Why Choose AST?
- Over 3000 vehicle-specific applications since 1966 proven across decades
- High-strength materials resist corrosion and fatigue for lasting performance
- Precision engineering matches OEM specs for plug-and-play reliability
Frequently Asked Questions
- Q: Will these fit my 2016 BMW 428i xDrive Gran Coupe?
A: Yes ASTLS-22-118 provides exact fitment for 2015-2016 BMW 428i xDrive Gran Coupe Base including front 40mm and rear 35mm drop - Q: What spring material is used?
A: High-tensile chrome-silicon steel coiled on Wafios machines for superior strength flexibility and corrosion resistance - Q: What does the lifetime warranty cover?
A: Full coverage against manufacturing defects breakage and sagging when installed properly on compatible vehicles
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed 18 x 9 x 8 inches
- Weight: 11.2 lbs
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