SKU: 0400.300.0550S | UPC: 803050388209
Universal Eibach ERS 4.00 in. Length x 3.00 in. ID 550 lb/in Coil-Over Spring
The Eibach ERS 4.00 in. Length x 3.00 in. ID Coil-Over Spring (part 0400.300.0550S) provides a 550 lb/in rate for consistent performance in motorsports. Designed for 3-inch ID coil-over shocks on drag cars, road racers, oval track vehicles, and custom setups. Delivers linear spring characteristics with industry-leading tolerances in height and rate.
Key Features
- Spring Rate: 550 lbs/in for predictable chassis response and handling balance in high-demand racing.
- Dimensions: 4.00 in free length x 3.00 in inside diameter fits standard coil-over assemblies.
- Material: High-tensile chrome silicon steel, shot-peened and stress-relieved for fatigue resistance.
- Production: Series manufactured with tolerances of +/- 0.2mm height and +/-1% rate for repeatable results.
- Finish: Scragged, preset, and silver powder coated for immediate use and corrosion protection.
Product Notes
- Sold as single spring; order in pairs or sets as needed for application.
- Special order item; processing time varies by manufacturer stock.
- Inspect shock perch and thread compatibility prior to installation.
Installation Notes
- Professional installation recommended.
- Compress spring with proper tool; set preload to achieve target ride height.
- Compatible with most 3.00 in ID coil-over shocks from QA1, Penske, Ohlins, and similar.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Race & Performance Vehicles | 3 in ID Coil-Over Equipped |
Why Choose Eibach?
- Decades of motorsports involvement with parts on winning race cars globally.
- Series production ensures consistent rate and dimensions across batches.
- Engineered linear force for reliable setup tuning in racing environments.
Frequently Asked Questions
- Q: What coil-over shocks does this spring work with?
A: Fits 3.00 in ID coil-overs including QA1, Bilstein, Fox, Penske, and custom race shocks used in drag, road, and dirt applications. - Q: What is the spring material and treatment?
A: Made from chrome silicon steel, dual-tempered, shot-peened, nitrogen fertilized, and epoxy powder coated for durability. - Q: What warranty coverage applies?
A: One-year limited warranty against defects in materials or workmanship under normal racing use.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: Special order – usually ships in 3-5 business days
- Packaging: Individual protective box, 5 x 5 x 5 inches
- Weight: 2.1 lbs
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