SKU: ASTLS-14-2728
AST 03/2014-07/2021 BMW 4 Lowering Springs – 30mm/30mm
AST Lowering Springs deliver a 30mm drop front and rear for 03/2014-07/2021 BMW 4 Series models including Gran Coupe variants. These direct OEM replacements lower the center of gravity to sharpen handling without sacrificing everyday comfort. Progressive spring rates ensure responsive performance on street or track.
Key Features
- 30mm Front/Rear Drop: Lowers vehicle stance for improved stability and aesthetics while maintaining safe ride dynamics
- Progressive Spring Design: Provides linear response that blends compliant ride quality with enhanced cornering grip
- Premium Materials & Wafios Coiling: High-tensile steel coiled on precision Wafios machines for durability and consistent rates
- Vehicle-Specific Engineering: Tailored for exact BMW 4 Series fitment as direct OEM spring swap with no modifications
- Lifetime Warranty: Covers against breaking for complete confidence in long-term reliability
Product Notes
- Direct replacement for factory springs with plug-and-play installation
- Pair with OEM or upgraded shocks for optimal results
- Ships in protective cardboard box to arrive undamaged
Installation Notes
- Professional installation recommended.
- Reuse OEM upper hats and insulators during swap
- Fully compatible with factory strut mounts and hardware
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2016 | BMW | 428i Gran Coupe | Base |
| 2017-2020 | BMW | 430i Gran Coupe | Base |
Why Choose AST?
- Proven track record in performance suspension for BMW enthusiasts
- Vehicle-specific development ensures perfect integration and ride tune
- Advanced manufacturing delivers lasting strength under demanding use
Frequently Asked Questions
- Q: Will these fit my 2016 BMW 428i Gran Coupe Base?
A: Yes, designed specifically for 2015-2016 BMW 428i Gran Coupe Base models as a direct OEM replacement - Q: What material are the springs made from?
A: Crafted from high-strength spring steel using precision Wafios coiling for superior fatigue resistance - Q: What does the warranty cover?
A: Lifetime warranty against spring breakage under normal use, no registration required
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Sturdy cardboard box 22 x 8 x 8 inches
- Weight: 24 lbs
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