SKU: 0175.225.0250 | UPC: 803050100368
Eibach ERS 2.25 in. ID Linear Tender Spring 0175.225.0250 - Universal Coilover Fit
Eibach ERS 2.25 in. ID linear tender spring measures 2.5 in. free height with 25 lb/in rate for coilover suspension systems. This universal helper spring fits most performance setups using 2.25 in. ID main coils, supporting the main spring at low ride heights to prevent coil bind. Drivers gain precise handling and ride control in racing, autocross, or street applications.
Key Features
- 25 lb/in Linear Rate: Delivers smooth, consistent support for main coil without harshness during compression.
- 2.25 in. Inner Diameter: Direct fit inside standard coilover main springs from Bilstein, Koni, Ohlins, and similar systems.
- 2.5 in. Free Height: Compact design suits lowered suspensions and tight perches for full droop travel.
- Chrome Silicon Steel: Shot-peened and preset for 100% travel life, resists fatigue in high-stress track use.
- Powder Coat Finish: Resists corrosion and maintains performance in wet or salty conditions.
Product Notes
- Helper spring only; pairs with main coil for complete stack.
- Inspect perch flats for secure seating during assembly.
- Packaged in protective sleeve; store flat to retain shape.
Installation Notes
- Professional installation recommended.
- Position between upper perch/spring seat and main coil base.
- Compatible with standard Eibach coilover hardware and adjustable perches.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | - | Coilover Systems | 2.25" ID Main Springs |
| 1989-2024 | Various | Miata MX-5 | All (coilover kits) |
| 1992-2020 | Honda | Civic | All (coilover kits) |
| 2006-2021 | BMW | 3 Series | All (coilover kits) |
| 1999-2024 | Subaru | WRX/STI | All (coilover kits) |
Why Choose Eibach?
- Motorsport leader since 1951 with wins in Formula 1, NASCAR, and rally.
- Every spring dyno-tested for exact rate and load consistency.
- German engineering with U.S. manufacturing for reliable track durability.
Frequently Asked Questions
-
Q: Will this fit my coilover kit?
A: Fits any coilover with 2.25 in. ID main spring; check perch ID over 2.5 in. for clearance. Common in Eibach, Fortune, Yellow Speed kits. -
Q: What material and finish?
A: High-tensile chrome silicon steel, shot-peened, heat-treated, with dual-layer powder coat for rust protection. -
Q: What is the warranty?
A: Eibach lifetime warranty on manufacturing defects when installed and used properly; register online for coverage.
Shipping & Handling
- Method: UPS Ground / USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: 4 in. x 4 in. x 4 in. box with foam sleeve
- Weight: 0.65 lbs
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


