Eibach’s Continuing Role in ARCA

Eibach’s relationship with ARCA is an important part of the company’s long-standing involvement in American stock-car racing. While Eibach is best known by many enthusiasts for its street-performance and off-road suspension products, the company has spent more than a decade supplying professional racing programs with precision-engineered springs.

Today, ARCA remains an active part of Eibach’s Speedway Spring Program, alongside NASCAR’s Xfinity and Craftsman Truck Series.

A Technical Partnership, Not Just a Sponsorship

Eibach describes itself as a proud partner of NASCAR and ARCA for more than a decade. Its role is centered on providing teams with high-quality, consistent racing springs designed specifically for the demands of stock-car competition.

The distinction is important. Eibach’s ARCA relationship is not simply about placing a logo at the racetrack. The company is supplying an actual performance-critical component of the race car’s suspension.

Every spring produced for the Speedway program is manufactured to stringent production tolerances and individually dyno tested to verify its load characteristics. Eibach says this approach is intended to provide consistent performance and help maintain a level playing field among competitors.

Purpose-Built ARCA Spring Packages

Eibach currently offers a dedicated ARCA Spring Kit, rather than simply providing teams with a selection of generic motorsports springs.

The current ARCA package consists of four springs:

Eibach lists the kit as a complete package for one vehicle, with the springs distributed at the races.

This provides an interesting look at how specialized the ARCA application is. Rather than relying on a one-size-fits-all aftermarket spring, Eibach has developed a defined spring package around the requirements of the ARCA platform.

Consistency Is the Real Technology

In professional stock-car racing, spring rate is only part of the equation. Consistency from one spring to another is critical.

A race team may spend significant time developing a chassis setup around a specific spring rate. If two springs marked with the same rate behave differently, the team can lose valuable setup information and track performance.

Eibach addresses this by individually testing its Speedway springs. The objective is to give teams predictable load characteristics so that changes to the car’s setup produce predictable results.

That philosophy extends throughout Eibach’s motorsports business. The company’s broader race-spring portfolio emphasizes linearity, tight manufacturing tolerances, reduced unsprung weight, and repeatability.

ARCA as a Development Environment

ARCA also fits naturally into Eibach’s broader motorsports strategy.

The series provides a competitive environment where suspension components are subjected to sustained loads, changing track conditions, aggressive driving, and the demands of close stock-car competition. That makes the series valuable not only as a racing platform but also as an environment for applying and validating suspension technology.

Eibach’s motorsports experience extends well beyond stock cars, including NASCAR, IndyCar, IMSA, Formula One, endurance racing, off-road, drifting, drag racing, touring cars, and grassroots competition.

From ARCA to the Aftermarket

The technology developed and refined through racing also reinforces Eibach’s broader suspension business.

Eibach currently offers more than 1,500 race-spring configurations across different motorsports applications, including coilover, barrel, conventional, off-road, bump, and specialized spring systems.

The company’s engineering philosophy is consistent across these programs: precise spring rates, repeatable manufacturing, maximum usable suspension travel, and predictable performance.

That makes ARCA an important part of the bridge between Eibach’s professional motorsports engineering and the performance products ultimately used by enthusiasts.

Eibach and ARCA Today

Eibach’s current ARCA involvement can best be described as a technical supply and engineering partnership.

The company provides a dedicated ARCA spring package, individually tests its Speedway springs, and distributes those components through the racing program.