Eibach Helper Spring 3.00in ID | 6.00in Length | 45 lb/in Rate

Keep Coilover Preload Consistent. Optimize Suspension Control.

When you’re chasing perfect handling, precision preload management is essential. The Eibach ERS Helper Spring (3.00” ID, 6.00” length, 45 lb/in rate) maintains main spring seating through the full range of suspension travel — keeping your coilovers stable, predictable, and quiet under load. Designed to complement Eibach’s legendary ERS main springs, this lightweight helper spring ensures your setup performs consistently from full droop to full compression.

Made from Eibach’s proprietary spring steel, every helper spring undergoes rigorous rate verification and fatigue testing to deliver unmatched precision. With its flat-wire design and minimal block height, this spring adds virtually zero resistance to your main spring rate while maximizing suspension stroke and shock travel.

Whether you’re dialing in a coilover setup on your track car, off-road buggy, or race UTV, Eibach’s helper springs give you the fine-tuning control you need for professional-grade performance.

The Function of a Helper Spring

A helper spring isn’t about stiffness — it’s about control. During droop or rebound, your suspension extends and the main spring can momentarily lose contact with its perch. This creates noise, binding, or unpredictable handling as the suspension re-engages. A helper spring prevents that by maintaining a small, controlled amount of preload, keeping the main spring seated at all times.

As the suspension compresses, the helper spring fully collapses into its flat block height, adding no measurable rate to your system. The result: a perfectly linear spring curve, no rattle, and consistent wheel control through every inch of travel.

Technical Specifications

Key Features

• Maintains Coil Seating: Keeps main spring loaded under full suspension droop.

• Flat-Wire Construction: Allows for ultra-low block height and maximum travel.

• Precision Rate Consistency: Individually tested for accuracy and uniformity.

• Light Preload Management: 45 lb/in rate adds no meaningful stiffness to main spring setup.

• Universal Coilover Fit: Compatible with 3.00 in ID main springs from Eibach, Hyperco, Swift, and others.

• Corrosion-Resistant Finish: Designed for longevity under road, track, or off-road conditions.

• Manufactured to Motorsports Standards: Built with the same precision as Eibach’s championship-winning ERS springs.

Applications and Use Cases

Eibach Helper Springs are an essential tool in performance suspension tuning for a wide range of vehicles and environments:

• Track Cars: Ensures main coil stability and precision during rapid weight transfer.

• Off-Road and UTVs: Maintains coil engagement during full droop or articulation.

• Drift and Autocross Builds: Keeps suspension consistent during rebound-heavy driving.

• Custom Coilover Systems: Enables consistent ride height and spring preload tuning.

When paired with Eibach ERS main springs, helper springs form a complete system that provides exact preload control, allowing for refined ride quality and consistent traction on any surface.

Installation and Setup

Installing a helper spring is simple but precise. It mounts between the main spring and perch divider (tender spring spacer) on your coilover assembly. During installation, compress both springs slightly to establish preload and verify that the helper fully collapses at ride height.

⚙️ Tuning Tips:

• Use a divider to ensure smooth transition between helper and main spring.

• Always confirm that the helper spring fully compresses under normal load.

• Verify that coil bind does not occur within the shock’s stroke range.

For advanced setups, Eibach Helper Springs can also be used in conjunction with tender springs to create hybrid progressive-rate systems or to fine-tune transition response for specific track or terrain conditions.

Why Choose Eibach

Eibach springs have defined the global standard in performance suspension for over 70 years. Each spring is cold-wound, heat-treated, shot-peened, and pre-set to eliminate settling and ensure unmatched rate consistency. The result: performance components that hold their shape, rate, and precision through thousands of suspension cycles.

Trusted by OEM manufacturers, championship teams, and builders around the world, Eibach’s engineering approach ensures every helper spring provides the same quality and performance demanded at the highest levels of motorsport.

The Fenix Motorsports Advantage

At Fenix Motorsports, we curate only the parts we trust on our own vehicles — components that deliver measurable performance and stand up to real-world abuse. Each Eibach spring we offer is tested, verified, and used in-house for our own coilover and suspension builds.

Our customers get more than just a product — they get expert insight, proven parts, and direct support from a team that builds and races.

• Verified fitment and application guidance

• Fast U.S. shipping

• Real-world performance validation through Fenix Proving Grounds

• Trusted by enthusiasts, fabricators, and racers alike