SKU: 1400.375.0550S | UPC:
Eibach ERS 14.00in Length x 3.75 in Dia x 550 lbs Coilover Main Spring
Engineered for motorsports, the Eibach ERS coilover main spring measures 14.00 inches in free height with a 3.75-inch inside diameter and 550 lbs/in rate. This universal component suits custom coilover assemblies in race cars, dragsters, and rally vehicles for precise suspension tuning. Delivers consistent performance through linear rate and minimal tolerances from high-volume production.
Key Features
- 14.00in Free Height: Supports full suspension travel in compact race chassis without binding.
- 3.75in Inside Diameter: Matches standard coilover perches and retainers for direct integration.
- 550 lbs/in Rate: Provides firm damping control ideal for high-speed corners and launches.
- Linear Spring Characteristic: Maintains even force progression across the compression range for repeatable lap times.
- Precision Tolerances: Series production yields consistent dimensions and rates spring after spring.
Product Notes
- Designed exclusively for racing; verify coilover body compatibility before use.
- Silver powder coat finish protects against corrosion in harsh track environments.
- Weight: 5.8 lbs; lightweight design reduces unsprung mass.
Installation Notes
- Professional installation recommended.
- Confirm perch ID at 3.75in and adjust preload to match ride height specs.
- Compatible with most adjustable coilover hardware; use lock nuts for secure retention.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | - | Race Coilover Systems | 3.75in ID / 550lb Rate |
Why Choose Eibach?
- ERS line sets the standard as the most comprehensive Race Spring System worldwide.
- Series production leverages decades of manufacturing for reliable results.
- Delivers linear rates with the tightest tolerances in production springs.
Frequently Asked Questions
-
Q: Will this spring fit my specific coilover kit?
A: Universal design fits any setup with 3.75in ID perches, 14in max height, and matching rate needs; cross-reference your kit specs. -
Q: What material construction is used?
A: High-tensile chrome-silicon steel, shot-peened for fatigue resistance and epoxy powder coated in silver. -
Q: What warranty coverage applies?
A: Backed by Eibach's 1-year limited warranty against manufacturing defects, sagging, or breakage under normal race conditions.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box, 16in L x 5in W x 5in H
- Weight: 5.8 lbs (shipping weight 6.5 lbs)
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