Eibach ERS Linear Main Spring

SKU: 1600.300.0200S | UPC: 803050345875

Eibach ERS Linear Main Spring – Silver 3.00″ I.D. x 2.00″ Universal Coilover

Eibach ERS Linear Main Spring delivers race-proven performance in coilover suspension setups. This silver coilover spring features a 3.00-inch inside diameter and 2.00-inch free length with a consistent 4.0 lb/in linear rate for responsive handling in drag, road race, and autocross applications. Built from high-tensile chrome silicon steel, it withstands extreme conditions while maintaining precise ride control.

Key Features

• Linear Spring Rate: 4.0 lb/in (0.70 kg/mm) provides predictable damping and suspension response under load.
• 3.00″ Inside Diameter: Direct fit for standard 2.5-inch shock body coilovers used in performance builds.
• 2.00″ Free Length: Compact design lowers center of gravity for improved stability and cornering grip.
• Silver Shot-Peened Finish: Increases surface durability, resists corrosion, and extends fatigue life in harsh environments.
• Chrome Silicon Construction: Heat-treated and preset for zero sag and reliable performance over thousands of cycles.

Product Notes

• Confirm perch ID and shock diameter match 3.00″ before installation.
• Pair with matching Eibach bump stops for full stroke utilization.
• Standard ground shipping; handles like standard package freight.

Installation Notes

• Professional installation recommended.
• Compress spring safely using coil spring compressor tool.
• Compatible with most threaded body coilovers like QA1, Penske, and Bilstein; verify thread pitch.

This Part Fits

Year	Make	Model	Submodel
Universal	All	Coilover Shocks	3.00″ ID Perch

Why Choose Eibach?

• Trusted by pro racing teams in NHRA, Formula Drift, and Global Rallycross.
• German-engineered with tolerances under 1mm for flawless fit and function.
• Backed by rigorous dyno testing for repeatable rates cycle after cycle.

Frequently Asked Questions

• Q: Does this spring fit my coilover shock?
  A: Yes, designed for any coilover with 3.00″ ID upper/lower perches and compatible shock diameter; measure your setup for confirmation.
• Q: What material and finish does it have?
  A: High-tensile chrome silicon steel wire with silver shot-peened and powder-coated finish for maximum strength and rust protection.
• Q: What is the warranty?
  A: Eibach offers a limited lifetime warranty against manufacturing defects and sagging when used in approved applications.

Shipping & Handling

• Method: Standard Ground
• Availability: In stock – ships same or next business day
• Packaging: Protective cardboard box, 4″ x 4″ x 3″
• Weight: 1.1 lbs