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SKU: 1200.300.0350S | UPC: 803050288035
Eibach ERS 12.00 in. Length x 3.00 in. ID Coil-Over Spring - 350 lb/in Rate
The Eibach ERS 12.00 in. Length x 3.00 in. ID Coil-Over Spring delivers a 350 lb/in rate for racing coilover setups. It fits most adjustable coilover shocks with 3.00 in. perches used in drag racing, road course, and autocross. This spring provides consistent response and reduced sag under high loads.
Key Features
- Spring Rate: 350 lb/in (±2% tolerance) delivers firm damping control for track demands
- Dimensions: 12.00 in. free height x 3.00 in. ID fits standard coilover perches precisely
- Material: High-tensile chrome-silicon steel alloy resists fatigue in extreme conditions
- Finish: Silver zinc plating protects against corrosion in wet or salty environments
- Construction: Shot-peened, preset, and squared-ground ends ensure zero sag and secure seating
Product Notes
- Sold as single unit; purchase multiples for front/rear setups
- For competition/off-road only; verify damper preload compatibility
- Standard ground shipping; handles LTL freight if bulk ordered
Installation Notes
- Professional installation recommended.
- Match perch diameter to 3.00 in. ID; use spring rubbers or reducers if needed
- Compatible with threaded coilover bodies like QA1, Bilstein MSS, or AFCO; preload 20-30%
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| Universal | All | Coilover Systems | 3.00 in. ID Perches |
Why Choose Eibach?
- Proven in NHRA, NASA, and SCCA racing series
- Exact rate consistency from advanced CNC winding
- Built for repeated high-stress cycles without failure
Frequently Asked Questions
-
Q: What coilover shocks does this spring fit?
A: Fits any adjustable coilover with 3.00 in. ID upper/lower perches, including most drag and circle track dampers; measure your setup first. -
Q: What material and protection does it have?
A: Premium chrome-silicon steel, shot-peened for strength, nitrogen-infused, and silver zinc plated for rust resistance. -
Q: What warranty applies?
A: 1-year limited warranty against manufacturing defects in racing use; excludes abuse or improper installation.
Shipping & Handling
- Method: Standard Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box, 13 in. x 4 in. x 4 in.
- Weight: 4.1 lbs
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