SKU: 1400.250.0400S | UPC: 803050289612
Eibach ERS 14.00 in. Length x 2.50 in. ID Coil-Over Spring - 400 lb/in Rate
The Eibach ERS 14.00 in. length x 2.50 in. ID coil-over spring with 400 lb/in rate delivers precise spring control for racing and performance coilover setups. This universal spring fits 2.5 in. ID coilover shocks on drag cars, autocross vehicles, and street performance builds like Mustangs, Camaros, and Civics. Its high-tensile chrome silicon steel construction ensures fatigue resistance under extreme loads for reliable cornering and launch performance.
Key Features
- 400 lb/in Spring Rate: Provides firm response for improved traction and chassis balance in high-grip scenarios.
- 14.00 in. Free Length: Allows drop settings from 8-12 in. to match ride height needs in various suspension geometries.
- 2.50 in. Inside Diameter: Direct fit for popular coilover brands including QA1, Bilstein, and Koni 2.5 in. shock bodies.
- Chrome Silicon Steel: High tensile strength material with shot peening and triple tempering resists sagging over thousands of cycles.
- Silver Powder Coat Finish: Protects against corrosion in harsh track environments while maintaining consistent rates.
Product Notes
- Sold individually; pair recommended for axle applications.
- Squared and ground ends ensure secure seating on perches.
- Ships in protective cardboard tube to prevent damage.
Installation Notes
- Professional installation recommended.
- Verify shock body ID measures exactly 2.50 in. for proper fit.
- Compatible with standard aluminum or steel perches; torque to manufacturer specs.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Coilover Shocks | 2.5" ID Bodies |
| 1987-1993 | Ford | Mustang | Fox Body |
| 1994-2004 | Ford | Mustang | SN95 |
| 1979-2004 | Chevrolet | Camaro | Various |
| 1989-Present | Honda | Civic | Drag/Autocross |
Why Choose Eibach?
- Trusted by factory teams in NHRA, NASA, and SCCA racing series.
- Produced in ISO/TS 16949 certified facilities with micron-level tolerances.
- Engineered for exact rate consistency across production batches.
Frequently Asked Questions
-
Q: Does this spring fit my coilover setup?
A: Yes, designed for any 2.5 in. ID coilover shock body. Commonly used in drag rear setups on Mustangs/Camaros and front struts on Civics/Miatas. -
Q: What material and finish does it have?
A: Made from premium chrome silicon steel alloy, shot peened, triple tempered, with silver powder coat for rust protection and rate identification. -
Q: What is the warranty and install tip?
A: Backed by Eibach's limited lifetime warranty against defects. Compress spring in safety cage during install and check preload evenly.
Shipping & Handling
- Method: UPS Ground / USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective tube, 16 in. L x 6 in. W x 6 in. H
- Weight: 5.05 lbs (net), 5.40 lbs (shipping)
Coilover Springs
Coilover springs are the replaceable compression springs that wrap around the shock body in a coilover assembly, determining ride height, spring rate, and the balance between comfort and handling stiffness. Swapping springs is the most direct way to tune a coilover setup for a new application without buying an entirely new system.Popular UpgradesLinear-rate springs in the 6 to 12 kg/mm range are the most popular choice for street performance and track day builds where predictable handling is more important than maximum compliance. Progressive-rate springs that soften on small bumps and stiffen under load are preferred for street cars that need to be both comfortable on rough roads and controlled in hard cornering. ID60 and ID65 springs are the most common inner diameter specifications across popular coilover platforms.What is the difference between linear and progressive coilover springs?A linear spring has a constant rate from full droop to full compression, providing consistent an...
View Coilover Springs Products
Coilovers & Components
Browse premium coilovers and suspension components including coilover kits, coilover shocks, coilover springs, lowering springs, shock hardware, suspension boots, dampening adjustment components, and performance suspension systems for trucks, SUVs, muscle cars, off-road builds, and street performance vehicles. Shop Top Coilover & Suspension Brands Find trusted suspension brands including Silver's NEOMAX, FOX, QA1, Eibach, ICON Vehicle Dynamics, Bilstein, KW Suspension, Ohlins, Ridetech, Fabtech, and ARB/OME. These brands are known for adjustable coilovers, performance shocks, lift and lowering suspension systems, coilover springs, and suspension hardware for daily driving, off-road use, drag racing, and track-focused builds. Coilovers & Components for Street, Track & Off-Road This collection includes complete coilover kits, front and rear coilovers, coilover springs, shock boots and protective covers, dampening adjustment extenders, suspension hardware kits, lowering spr...
View Coilovers & Components Products
Eibach
Shop Eibach suspension parts at Black Ops Auto Works for lowering springs, Pro-Kit springs, Sportline springs, Pro-Truck lift kits, Pro-Truck coilovers, sway bars, anti-roll kits, wheel spacers, Pro-Spacer systems, alignment kits, camber arms, shocks, coilovers, ERS springs, off-road springs, and suspension accessories. Eibach is trusted by enthusiasts who want improved stance, sharper handling, reduced body roll, better ride control, increased ground clearance, and vehicle-specific suspension performance for cars, trucks, SUVs, EVs, and off-road builds. Use this Eibach collection to choose the right suspension upgrade by vehicle platform, ride-height goal, handling goal, and product type. Eibach Pro-Kit and Sportline springs are popular for lowering and stance, Pro-Truck lift systems support trucks and SUVs, Anti-Roll-Kits improve cornering response, Pro-Spacer systems help refine wheel fitment, and ERS springs support custom motorsport or coilover setups. Shop Eibach Suspension P...
View Eibach Products
Suspension
Aftermarket suspension systems improve handling, ride quality, and ride height adjustment beyond what the factory suspension provides. From lowering springs and coilover kits for sport handling to lift kits and leveling kits for truck and SUV off-road capability, quality suspension components transform how a vehicle rides and handles. Popular Suspension Upgrades Popular suspension upgrades include coilover kits for adjustable ride height and damping, sport lowering springs for improved handling and reduced body roll, performance shock absorbers and strut assemblies, sway bar and end link upgrade kits, subframe brace kits, and complete suspension packages for lifted trucks and off-road SUVs. Alignment kits including camber bolts and camber arms are also frequently ordered after ride height changes. What is the difference between coilovers and lowering springs? Coilovers are complete shock and spring assemblies with adjustable ride height set by threading the spring perch on the shock...
View Suspension Products


