SKU: 1400.300.0175S | UPC: 803050287977
Eibach ERS Linear Main Spring – Silver Coilover Spring 3.00″ I.D. 7.00″ Height 175 lb/in
The Eibach ERS Linear Main Spring 1400.300.0175S is a precision-engineered silver powder-coated coilover spring built for racing and high-performance street use. With a 3.00″ inner diameter, it installs directly into compatible coilover strut assemblies on sport compacts, muscle cars, imports, and race vehicles. Its linear rate ensures predictable handling, reduced body roll, and improved traction under load.
Key Features
- Linear Rate Design: Delivers consistent 175 lb/in rate across full travel for stable cornering and braking response.
- 3.00″ Inner Diameter: Matches standard aftermarket coilover struts for straightforward integration in most setups.
- 7.00″ Free Length: Provides generous suspension travel while maintaining proper ride height.
- Silver Powder Coat Finish: Epoxy coating protects against corrosion and harsh track conditions for extended durability.
- High-Tensile Construction: Shot-peened chrome silicon steel withstands extreme loads up to 1215 lbs with minimal sag.
Product Notes
- Pair with matching helper or secondary springs for complete coilover assembly.
- Inspect spring seating and preload during setup to ensure even load distribution.
- Special order processing may apply; confirm stock before ordering.
Installation Notes
- Professional installation recommended.
- Compress spring safely using coilover-specific tools to avoid damage.
- Compatible with Eibach, KW, BC Racing, and Fortune coilover hardware.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | Various | 3″ ID Coilover Systems | All Performance Models |
| 1989-1999 | BMW | 3 Series | E36 |
| 1992-2000 | Honda | Civic | EG/EK |
| 1989-1997 | Mazda | Miata | NA |
| 1999-2006 | BMW | 3 Series | E46 |
Why Choose Eibach?
- Trusted by factory teams in Formula Drift, NASA, and SCCA racing series.
- Manufactured with tolerances under 1mm for exact fit and function.
- Backed by decades of suspension engineering expertise.
Frequently Asked Questions
- Q: Does this spring fit my coilover kit?
A: Yes, it fits any 3.00″ ID coilover strut assembly, including Eibach Pro-Street S, KW V3, and BC Racing BR systems; verify perch compatibility. - Q: What material is used in this spring?
A: Premium chrome silicon steel, shot-peened, heat-treated, and preset for fatigue resistance and longevity. - Q: What warranty coverage applies?
A: Eibach provides a limited lifetime warranty against manufacturing defects when installed and used properly.
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard tube, 8″ x 4″ x 4″ dimensions
- Weight: 2.60 lbs
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