SKU: ASTLS-14-330
AST 1975-10/1982 BMW 3 Lowering Springs - 40mm/40mm
AST Lowering Springs deliver a 40mm drop front and rear for 1975-1982 BMW 3 Series E21 chassis lowering the center of gravity for sharper handling while retaining OEM ride comfort. These direct OEM replacements feature vehicle-specific engineering for seamless fitment on models including 320i. Progressive spring design and premium construction ensure durability on street or track.
Key Features
- 40mm Front/Rear Drop: Lowers ride height precisely for improved cornering stability and aesthetics without sacrificing daily drivability
- Progressive Spring Rate: Provides linear response that absorbs bumps smoothly while firming up under load for enhanced performance
- Wafios Coiling Technology: Precision-wound from high-tensile spring steel for consistent rates and long-term resistance to sagging
- Vehicle-Specific Design: Tailored rates and dimensions match each BMW E21 variant ensuring bolt-on installation and balanced stance
- Lifetime Warranty: Covers breakage for complete confidence in reliability over years of use
Product Notes
- Inspect OEM struts for wear before installation to pair with new springs effectively
- Clean mounting surfaces thoroughly for secure seating and optimal performance
- Packaged as pair in protective sleeves to prevent shipping damage
Installation Notes
- Professional installation recommended.
- Use spring compressor tool to safely remove OEM springs
- Directly compatible with factory struts shocks and control arms no additional hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1982 | BMW | 320i | Base |
| 1977-1979 | BMW | 320i | |
| 1976 | BMW | 320i | |
| 1975-1976 | BMW | 3 Series | E21 |
| 1981-1982 | BMW | 323i |
Why Choose AST?
- Proven in motorsports and street applications by BMW enthusiasts worldwide
- Focuses on balanced suspension solutions for performance and comfort
- Advanced manufacturing delivers exact tolerances for E21 chassis demands
Frequently Asked Questions
-
Q: Will these fit my 1981 BMW 320i E21?
A: Yes fits all 1975-1982 BMW 3 Series E21 chassis including 320i models with 40mm drop front rear for perfect stance -
Q: What material and construction do these use?
A: High-tensile steel coiled on Wafios machines with progressive rates for durability and responsive handling -
Q: What does the warranty cover?
A: Lifetime protection against spring breakage when installed and used properly on compatible vehicles
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Pair in 18 x 7 x 7 inch box with protective sleeves
- Weight: 11 lbs
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