Name: Eibach 12" Coilover Race Springs – 2.5″ ID | 100–500 lb/in
Brand: Eibach
SKU: EIB1200.250.0100S
Price: 87.0 USD
Availability: InStock

$87.00

Quantity

Off-road racing demands consistency, durability, and precise spring control. The Eibach Racing Off-Road (ERO) Spring System is engineered to withstand extreme abuse while maintaining accurate spring rate and free length.

From desert racing to rock crawling, ERO springs are race-proven in events like:

Baja 1000
Dakar Rally
King of the Hammers

These springs deliver maximum travel, minimal block height, and repeatable performance in both single-rate and dual-rate coilover setups.

2.5″ I.D. Specific Details

Available in a silver powder coated finish, ERO 2.5″ I.D. coil springs are offered in a wide range of spring rates rom 100lb/in to 500lb/in

Built with the highest quality materials, these springs are strong, consistent, and engineered for long service life under extreme off-road conditions.

Includes:

(1) Eibach ERO Coil Spring (selected rate)

Sold Individually

General ERO Line:

Inside Diameters: 2.5″
2.5″ ID Length Range: 12"
Spring Rates: 100–500 lb/in
Finish: Silver Powder Coat
Individually Rate Tested

Material & Manufacturing:

Material: Chrome Silicon Steel (CrS)
Manufacturing Process:
- Cold Wound
- Heat Treated
- Shot Peened
Ends: Squared & Ground at Both Ends
Coating: Protective Silver Powder Coat

Universal fitment for:

2.5″ coilover shocks
Dual-rate coilover setups
Rock crawlers
Ultra4 race builds
Desert trucks and prerunners
Rock bouncers

Verify inside diameter matches your coilover body and spring hardware.

Race-Proven Durability

ERO springs are engineered to maintain rate and free length even after repeated full compression cycles. They are designed to handle:

Extreme suspension cycling
High heat environments
Heavy unsprung weight
Continuous race abuse

Block-Stable Design

In dual-rate setups, the tender spring is often designed to fully compress (block) to transition into the main spring. ERO springs are built to:

Safely block repeatedly
Maintain consistent transition points
Resist sagging or rate loss

Precision Manufacturing

Every spring is:

Individually tested
Manufactured to precise tolerances
Built for maximum linearity and repeatable performance

Squared and ground ends ensure straight, consistent operation and accurate preload setup — critical for corner balancing and fine suspension tuning.

Technical Resources

Spring Rate Chart (PDF)

Works well with

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