SKU: ASTLS-21-045 | UPC: astASTLS-21-045
AST Suspension 2018+ BMW M5 F90 Competition Lowering Springs 20mm/10mm
AST Lowering Springs ASTLS-21-045 deliver a 20mm front and 10mm rear drop for 2018-2023 BMW M5 F90 models including Base Competition CS Edition 35 Years and M550i xDrive. These direct OEM replacements lower the center of gravity to sharpen handling and cornering while maintaining daily driving comfort. Crafted with progressive rates on Wafios machines from high-tensile steel for durability and performance gains.
Key Features
- Precise Lowering: 20mm front 10mm rear drop reduces center of gravity for better stability and reduced body roll during aggressive driving
- Progressive Spring Design: Variable rates preserve OEM ride quality over bumps yet firm up under load for track-ready response
- Cold-Coiled Construction: Produced on Wafios machines for consistent tolerances and strength across 3000+ vehicle applications since 1966
- Premium Materials: High-tensile steel resists corrosion and fatigue for long-term reliability in all conditions
- Lifetime Warranty: Guaranteed against breaking provides confidence for spirited street or circuit use
Product Notes
- Direct bolt-on replacement no modifications required to suspension geometry or alignment
- Pair with AST coilovers for full setup compatibility
- Securely packaged for damage-free delivery
Installation Notes
- Professional installation recommended.
- Requires standard spring compressor tool and 4-6 hours labor
- Fully compatible with OEM struts shocks and control arms
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2018-2023 | BMW | M5 | Base |
| 2019-2021 | BMW | M5 | Competition |
| 2022 | BMW | M5 | CS |
| 2020 | BMW | M5 | Edition 35 Years |
| 2018-2023 | BMW | M550i xDrive | Base |
Why Choose AST?
- Proven in racing with dampers used by GT3 teams worldwide
- Vehicle-specific engineering for exact fit and dynamic balance
- Over 50 years refining suspension components for BMW drivers
Frequently Asked Questions
-
Q: Will these fit my 2020 BMW M5 Competition F90?
A: Yes ASTLS-21-045 fits all listed 2018-2023 M5 variants including Competition CS Edition 35 Years and M550i xDrive as direct OEM spring swap -
Q: What material are the springs made from?
A: High-tensile chrome-silicon steel cold-coiled for superior fatigue resistance and consistent performance -
Q: What does the lifetime warranty cover?
A: Full protection against manufacturing defects including breaking under normal use contact AST for claims
Shipping & Handling
- Method: Free ground shipping on orders over $99
- Availability: In stock - ships same or next business day
- Packaging: Compact box 20x10x10 inches
- Weight: 22 lbs
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