Eibach Coilover Springs 3.0" I.D.
EIB1000.300.0100S
The Eibach 3.0" I.D. Off-Road Coilover Spring is designed for high-performance off-road suspension systems that demand consistent spring rates, predictable handling, and long-term durability. Built for use with 2.5" coilover shocks, these springs are commonly found on rock crawlers, rock bouncers, Ultra4 race cars, desert race trucks, prerunners, trail rigs, and custom tube chassis builds.
Engineered as part of the Eibach Racing Off-Road (ERO) spring system, each spring is manufactured from premium spring steel and designed to maintain accurate spring rates under extreme loads and repeated suspension cycling. The lightweight design maximizes usable suspension travel while minimizing block height, making these springs ideal for both single-rate and dual-rate coilover configurations.
Includes:
- (1) Eibach 3.0" I.D. Coilover Spring
- Selected Spring Rate
- Selected Spring Length
Sold Individually
Specifications
- Brand: Eibach
- Inside Diameter: 3.0"
- 3.0″ ID Length Range: 10" - 18"
- Spring Rates Available: 75 lb/in – 650 lb/in
- Finish: Silver Powder Coat
- Spring Type: Coilover Suspension Spring
- Compatible with: 2.5" Coilover Shocks
- Suitable for: Single-Rate and Dual-Rate Coilover Systems
- Designed for: Off-Road and Racing Applications
- Design: Race-Proven ERO (Eibach Racing Off-Road)
- Material: Chrome Silicon Steel (CrS)
- Manufacturing Process:
- Cold Wound
- Heat Treated
- Shot Peened
- Ends: Squared & Ground at Both Ends
- Coating: Protective Silver Powder Coat
- Individually Rate Tested
Fitment
Universal fitment for:
- 2.5” I.D. coilover shock applications
- Compatible with most 2.5” off-road coilover shocks
- Commonly used on:
- Rock Crawlers
- Rock Bouncers
- Ultra4 Cars
- Desert Race Trucks
- Prerunners
- Trail Rigs
- Tube Chassis Buggies
- Custom Off-Road Vehicles
Verify spring length and spring rate requirements before ordering.
Tech Insight
What does 3.0" I.D. mean?
3.0" I.D. refers to the inside diameter of the spring. These springs are designed specifically for use with 2.5” coilover shock bodies and matching spring hardware.
How do I choose the correct spring rate?
Spring rate selection depends on vehicle weight, suspension geometry, motion ratio, ride height goals, and intended use. Heavier vehicles generally require higher spring rates, while lighter vehicles often perform best with softer springs. You can watch our tutorial on Calculating Spring Rates for more information.
Can these springs be used in a dual-rate coilover setup?
Yes. Eibach 3.0" coilover suspension springs are commonly used in both single-rate and dual-rate suspension systems for rock crawling, racing, and recreational off-road use.
Are these springs sold individually or in pairs?
These springs are sold individually. Two springs are typically required per axle when building a complete suspension package.
What vehicles commonly use 3.0" suspension springs?
3.0" coilover springs are frequently used on rock bouncers, Ultra4 cars, desert race trucks, custom buggies, trail rigs, and other high-performance off-road vehicles running large-diameter coilover shocks.
Are Eibach Off-Road Coilover Springs durable?
Yes. 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
Are these coilover springs block-stable?
Yes. 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
