SKU: 0500.225.0550 | UPC: 803050103505
Eibach ERS 5.00 in. Length x 2.25 in. ID x 550 lb/in Coil-Over Spring
The Eibach ERS 0500.225.0550 is a precision race spring designed for coil-over shock applications in motorsports. With a 2.25-inch inside diameter, 5.00-inch free height, and 550 lb/in spring rate, it delivers consistent performance across drag racing, oval track, and road course setups. Manufactured with tight tolerances for repeatable linear rates, this spring ensures reliable suspension response under high loads.
Key Features
- Linear Spring Rate: 550 lb/in provides smooth, predictable progression for balanced handling and control.
- Precision Dimensions: 5.00 in. free length, 2.25 in. ID, 2.8125 in. OD, 0.938 in. wire diameter with ground flat ends for exact fit in coilover assemblies.
- Tight Tolerances: Industry-low variation (+/-1%) from series production ensures consistent setup lap after lap.
- Chrome Silicon Steel: Heat-treated and shot-peened for fatigue resistance and long life in demanding race conditions.
- Compact Design: Block height 2.19 in., max expansion 7.88 in. supports high preload without binding.
Product Notes
- Intended for racing coilover shocks; verify ID compatibility before install.
- Store in dry conditions to maintain steel integrity.
- Ships in protective cardboard tube to prevent damage.
Installation Notes
- Professional installation recommended.
- Match to shocks with 2.25-2.30 in. body diameter; adjust preload to achieve 50-70% bind.
- Compatible with most aftermarket coilover hardware including QA1, Bilstein, and Fox bodies.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | – | Coilover Shocks | 2.25″ ID Race Applications |
Why Choose Eibach?
- Decades of race spring manufacturing experience worldwide.
- Proven in professional drag, dirt oval, and road racing series.
- Engineered for repeatable rates and minimal settling over time.
Frequently Asked Questions
- Q: What coilover shocks does this spring fit?
A: Fits universal 2.25 in. ID coilover shocks from QA1, Bilstein, Penske, Ohlins, and similar race shocks used in dragsters, stock cars, and sports racers. - Q: What material is used and what are the exact specs?
A: High-tensile chrome silicon steel; 5.00 in. free height, 2.25 in. ID, 2.8125 in. OD, 0.938 in. wire dia., 550 lb/in rate, 2.19 in. block height. - Q: What is the warranty and install tips?
A: Eibach offers a limited lifetime warranty against manufacturing defects; torque per shock specs, check for bind at full droop, recheck preload after 10 heat cycles.
Shipping & Handling
- Method: UPS Ground / USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Protective tube; box dimensions 6 in. L x 6 in. W x 6 in. H
- Weight: 3.00 lbs
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