| Year | Make | Model |
|---|---|---|
| 2001 - 2003 | BMW | 525i Base |
| 1999 - 2000 | BMW | 528i Base |
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AST Lowering Springs 35mm/35mm E39 Touring w/ Air Suspension (ASTLS-14-428) (SPF14-428)
AST Lowering Springs 35mm/35mm E39 Touring w/ Air Suspension (ASTLS-14-428) (SPF14-428)
SKU:ASTLS-14-428
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Regular price
$148.12 USD
Regular price
$177.75 USD
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$148.12 USD
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▶ Vehicle Fitments
The AST Lowering Springs for the 1997-2004 BMW 5 Series E39 Touring are high-performance suspension components designed to improve handling and aesthetics. Constructed from premium high tensile chromium-silicone wire, these springs are meticulously handpicked by AST engineers for their quality and metal consistency. Each spring undergoes a rigorous manufacturing process, including cold winding, heat treatment to enhance hardness and reduce internal stresses, followed by shot peening, phosphate treatment, and powder coating to ensure durability and longevity. Featuring progressive rates on most vehicles, these springs provide a smoother ride while lowering the vehicle's stance for a sportier appearance and improved cornering performance.
Designed specifically for the E39 chassis, these springs fit 1997-2004 BMW 5 Series Touring models equipped with air suspension systems. They serve as an effective upgrade for enthusiasts seeking lowered ride height and enhanced handling characteristics, whether for street driving or spirited performance. The installation is a direct replacement for factory springs, maintaining compatibility with existing suspension components. The kit includes the lowering springs themselves, with no additional components required. Suitable for daily driving, street use, or track days, these springs deliver a combination of durability, performance, and improved vehicle stance.
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Overview
Overview
AST Lowering Springs for the 1997-2004 BMW 5 Series (E39) are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency.
Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.
Features
- Progressive rates on most vehicles.
- EDC Compatible (if applicable to vehicle)
- Each spring is blocked and computer tested prior to shipping, which reduces any settling once installed on the vehicle.
- Lifetime warranty on breaking.
- Most of our spring applications are TUV Certified and certificates can be provided upon request.
Specifications
| Part Number | ASTLS-14-428 |
| Product | AST Lowering Springs |
| Production Years | 03/1997-05/2004 |
| Model Years | 1997-2004 |
| Make | BMW |
| Model | 5 Series |
| Chassis | E39 |
| Approximate Drop – Front | 35mm |
| Approximate Drop – Rear | 35mm |
| TÜV Certified | Yes |
| Model Note | - |
| Note 1 | Excluding M-models, S4 models and cars with Audi sport chassis. |
| Note 2 | The bumpstop must be shortend to 45 mm. |
| Note 3 | In the case cars with a level regulation facility, the rear of the car can be lowered by approx. 15mm if desired by changing the settings on the level regulation system. |
Vehicle Fitment
- 1997 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 1998 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 1999 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 2000 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 2001 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 2002 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 2003 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
- 2004 BMW 5 Series 520i/523i/525i/528i/530i/520D/525TDS Touring w/ Air Suspension HA (E39)
