SKU: ASTLS-22-145
AST 11/2018- BMW Z4 Lowering Springs – 25mm/25mm
AST Lowering Springs deliver a 25mm drop front and rear as a direct OEM replacement for 2020-2024 BMW Z4 M40i models built from November 2018. They lower the center of gravity to sharpen handling and cornering without sacrificing the comfort of stock springs. Progressive spring rates provide balanced performance for daily driving and spirited runs.
Key Features
- 25mm Front/Rear Drop: Reduces center of gravity for improved stability and reduced body roll during turns.
- Progressive Spring Design: Varies spring rates to absorb bumps smoothly while firming up under load for precise control.
- Premium Materials & Wafios Coiling: High-tensile steel coiled on advanced Wafios machines ensures durability and consistent performance.
- Vehicle-Specific Engineering: Developed exclusively for BMW Z4 M40i models from 11/2018 production for bolt-on fit and OEM-like ride quality.
- Lifetime Warranty: Guaranteed against breakage for long-term reliability on the road or track.
Product Notes
- Special order item typically ships within 5-7 business days.
- Pair with performance shocks for optimal results and extended tire life.
- Box dimensions 20 x 8 x 8 inches product weight 11 lbs.
Installation Notes
- Professional installation recommended.
- Requires standard spring compressor tool and alignment after install.
- Direct swap with OEM springs no additional hardware needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020 | BMW | Z4 | M40i First Edition |
| 2020-2021 | BMW | Z4 | sDrive M40i |
| 2022-2024 | BMW | Z4 | M40i |
Why Choose AST?
- Applications cover over 3000 vehicle models from 1966 to 2023.
- Precision manufacturing matches OEM tolerances for seamless integration.
- Lifetime warranty backs every set against manufacturing defects.
Frequently Asked Questions
- Q: Will these fit my 2022 BMW Z4 M40i?
A: Yes fits all 2022-2024 BMW Z4 M40i models built from 11/2018 including RWD configurations. - Q: What materials are used in AST springs?
A: High-tensile steel coiled on Wafios machines for strength corrosion resistance and fatigue life. - Q: What does the lifetime warranty cover?
A: Full coverage against spring breakage under normal use no registration required.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: Special order ships within 5-7 business days
- Packaging: Protective cardboard box 20 x 8 x 8 inches
- Weight: 11 lbs
Reviews
There are no reviews yet.