SKU: 1800.300.0300S | UPC: 803050313065
Eibach ERS 18.00 in. Length x 3.00 in. ID Coil-Over Spring 300 lb/in Rate
Engineered for racing coilover systems the Eibach ERS 18.00 in. Length x 3.00 in. ID Coil-Over Spring delivers a 300 lb/in rate. This universal race spring fits custom suspension setups in motorsports providing linear characteristics for reliable handling. Built in series production it maintains tight tolerances for repeatable performance.
Key Features
- Spring Rate: 300 lb/in delivers consistent force and predictable suspension response across full travel
- Free Length: 18.00 in supports adjustable setups in coilover struts for track-tuned ride heights
- Inside Diameter: 3.00 in matches standard coilover shock bodies for direct compatibility
- Material: High-tensile chrome silicon steel heat treated and shot peened for fatigue resistance under high loads
- Finish: Silver zinc phosphate coating resists corrosion in harsh racing environments
Product Notes
- Designed exclusively for competition and track use
- Inspect springs regularly for cracks or deformation after race sessions
- Ships in protective cardboard tube to prevent damage
Installation Notes
- Professional installation recommended.
- Verify coilover strut outer diameter fits 3.00 in ID precisely
- Pair with matching Eibach perches and hats for secure assembly
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Coilover Suspension | Race/Performance |
Why Choose Eibach?
- Used by race teams across global motorsports series
- Series production process yields consistent rates and dimensions
- Precision manufacturing holds tolerances to industry-leading standards
Frequently Asked Questions
- Q: What vehicles does this spring fit?
A: Universal fit for any coilover system with 3.00 in ID compatibility in racing or performance applications. Confirm strut dimensions before purchase. - Q: What material and treatments are applied?
A: Made from high-tensile chrome silicon steel shot peened heat treated nitrogen infused and dual-tempered for extended life. - Q: What warranty coverage applies?
A: Limited lifetime warranty against defects in materials or workmanship when properly installed and maintained.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Protective cardboard tube 19 x 4 x 4 inches
- Weight: 7.65 lbs








