SKU: ASTLS-14-474
AST 04/2009-01/2019 BMW Z4 Lowering Springs – 30mm/25mm
AST Lowering Springs deliver a 30mm front and 25mm rear drop for 2009-2016 BMW Z4 models including sDrive35i and sDrive35is. This direct OEM replacement lowers the center of gravity to sharpen handling and response while retaining familiar OEM ride comfort. Progressive spring rates ensure balanced performance for daily driving and spirited track use.
Key Features
- Precise Drop Height: 30mm front 25mm rear tuned specifically for BMW Z4 E89 chassis to improve stability and aesthetics
- Progressive Spring Design: Variable rates deliver compliant ride over bumps with firmer control in corners for confident driving
- Premium Construction: High-tensile steel coiled on Wafios machines for exact tolerances and long-term durability
- Vehicle-Specific Engineering: Custom-developed for BMW Z4 models ensuring bolt-on fit without modifications or alignment issues
- Lifetime Warranty: Guaranteed against breakage providing reliability for years of performance driving
Product Notes
- Pair with stock shocks or upgrade to coilovers for full suspension refresh
- Regular alignment check recommended after installation to optimize tire wear
- Packaged securely to arrive ready for install
Installation Notes
- Professional installation recommended.
- Use spring compressor tool for safe removal of OEM springs
- Directly compatible with factory struts shocks and control arms
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2009-2016 | BMW | Z4 | sDrive35i |
| 2011-2016 | BMW | Z4 | sDrive35is |
Why Choose AST?
- Proven across 3000+ vehicle models from 1966 to 2023
- Crafted for performance that matches BMW engineering standards
- Direct replacement design fits perfectly from the factory
Frequently Asked Questions
- Q: Will these fit my 2013 BMW Z4 sDrive35i?
A: Yes fits all 2009-2016 BMW Z4 sDrive35i models as a direct OEM spring replacement - Q: What material and finish do the springs have?
A: High-strength spring steel with corrosion-resistant coating for all-weather durability - Q: What is covered under the lifetime warranty?
A: Full protection against manufacturing defects sagging and breakage for the original owner
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Durable cardboard box 18 x 10 x 8 inches
- Weight: 11 lbs
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