SKU: 1800.300.0700S | UPC: 803050288530
Eibach ERS 18.00 in. Length x 3.00 in. ID Coil-Over Spring 700 lb/in - Universal Fit
The Eibach ERS 18.00 in. Length x 3.00 in. ID Coil-Over Spring (part 1800.300.0700S) delivers a 700 lb/in rate for coilover suspension systems in drag racing, road course, circle track, and custom street performance builds. This spring fits standard 3-inch ID coilover struts and shocks on a broad range of high-performance vehicles. Its firm rate supports quick response, stable cornering, and maintained tire contact under load.
Key Features
- Free Length: 18.00 inches provides extended travel capacity for tall coilover setups in racing applications.
- Inner Diameter: 3.00 inches matches common coilover perch sizes for direct compatibility.
- Spring Rate: 700 lb/in generates stiff damping to control chassis motion and improve lap times.
- Material: Chrome-silicon high-tensile steel alloy resists fatigue for repeated high-stress cycles.
- Process: Shot-peened, preset, squared/ground ends, and dual-phase epoxy silver coating ensure rate retention and rust protection.
Product Notes
- For competition use; pair with matching rate springs front/rear for balance.
- Store in dry conditions; avoid chemical cleaners to preserve coating.
- LTL shipping not required; handles like standard auto parts.
Installation Notes
- Professional installation recommended.
- Confirm coilover perch fits 3.00 in. ID exactly; use spring rubbers or isolators.
- Compatible with Eibach Pro-Truck, Pro-Street coilovers and most adjustable strut cartridges.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Coilover Suspension | Drag/Road/Track/Street |
Why Choose Eibach?
- Used by factory teams in NHRA, NASA, and SCCA racing series.
- CNC-controlled winding for exact rate and dimension tolerances.
- Tested to 1 million compression cycles for track reliability.
Frequently Asked Questions
-
Q: Does this fit my coilover kit?
A: Fits any coilover strut or shock with 3.00 in. ID perch and 18+ in. height clearance, including QA1, Bilstein, Fox, and King applications. -
Q: What steel is used?
A: Premium chrome-silicon alloy with tensile strength over 220,000 psi for heat resistance up to 500°F. -
Q: What warranty applies?
A: One-year limited warranty on manufacturing defects; lifetime protection against sagging from normal competition use.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective plastic sleeve in fiberboard box, 19 x 4 x 4 inches
- Weight: 5.3 lbs
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