SKU: ASTALS-21-021
AST Suspension BMW M5 G99 Adjustable Lowering Springs 2025+
AST Suspension adjustable lowering springs provide precise height control for the 2025+ BMW M5 G99 chassis with 10-30mm front drop and 20-45mm rear drop. These springs improve cornering grip reduce body roll and preserve daily drivability when paired with stock dampers. Direct bolt-on design installs on G99 platform without modifications.
Key Features
- Adjustable Height: Threaded perches deliver 10-30mm front and 20-45mm rear drop for custom stance and alignment adjustments.
- Chrome Silicon Steel: High-tensile progressive wound construction resists sagging under high-speed track loads.
- Linear Spring Rates: Front 6.8 kg/mm rear 11.2 kg/mm ensure balanced response and comfort matching OEM ride quality.
- Direct Fitment: Engineered for BMW M5 G99 OEM strut mounts requires no additional hardware.
- Corrosion Resistant: Dual-layer powder coat and e-coat finish protects against road salt and harsh conditions.
Product Notes
- Pair with upgraded dampers for track use to optimize damping rates.
- Realign suspension after installation to restore camber and toe settings.
- Ships fully assembled ready for install weight 22.5 lbs.
Installation Notes
- Professional installation recommended.
- Use spring compressor tool for safe removal of OEM springs.
- Compatible with factory BMW strut assemblies torque to OEM specs.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2025+ | BMW | M5 | Sedan (G99) |
Why Choose AST Suspension?
- Proven in GT3 racing and supplied to professional teams worldwide.
- Hand-assembled in Netherlands with rigorous dyno testing.
- Precision tolerances match BMW engineering standards.
Frequently Asked Questions
- Q: Will these fit the 2025 BMW M5 G99?
A: Yes designed specifically for G99 chassis including hybrid powertrain clearance all submodels. - Q: What spring material is used?
A: Aerospace-grade chrome silicon steel with progressive winding for progressive load handling. - Q: What is the warranty and install process?
A: 1-year manufacturer warranty covers defects professional install takes 2-4 hours per corner alignment required after.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard box 24 x 14 x 8 inches
- Weight: 22.5 lbs
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