Eibach ERS XT Barrel Spring - Extreme Travel Circle Track Race Spring

The Eibach ERS XT (Extreme Travel) Barrel Spring is a purpose-engineered circle track racing coil spring designed to deliver maximum suspension travel, reduced unsprung mass, and race-proven consistency on both dirt and pavement surfaces. Part of Eibach's industry-leading ERS (Eibach Race Spring) lineup, the XT Barrel Spring represents a significant advancement in coilover spring technology for competitive motorsport applications.

Innovative Barrel Spring Design

• Distinctive barrel-shaped coil geometry increases spring-coil pitch beyond conventional designs, yielding greater usable travel within a compact package
• Nested end-coil design allows the ends to seat inside the barrel profile, compressing overall block height while maximizing active suspension travel
• Fully compatible with standard 2.5-inch spring perches, offering drop-in compatibility with common circle track shock packages while delivering the clearance benefits of a larger-diameter spring
• Compact barrel profile improves access to lower ball joints within tight suspension packaging

Race-Grade Materials and Manufacturing

• Produced from highest tensile strength wire — the same wire technology used in Eibach's Platinum series rear springs for NASCAR Cup Series competition
• Ultra-lightweight construction minimizes unsprung mass for sharper suspension response and improved handling balance
• Manufactured via Eibach's precision series production process, consistently delivering the most linear spring rate characteristics and tightest dimensional tolerances in the industry
• Every spring is individually tested and rated, guaranteeing consistent, repeatable performance across the entire product line

Performance Advantages

• Maximum suspension travel combined with the smallest possible block heights
• Exceptional rate linearity and guaranteed consistency from unit to unit
• Lowest side loads, with the load center ideally located relative to the spring axis
• Reduced unsprung weight for improved tire contact patch, traction, and cornering response
• Backed by Eibach's industry-leading lifetime warranty

Eibach's Racing Pedigree

Founded in 1949, Eibach has grown into a globally recognized leader in performance spring technology. Eibach automotive springs have contributed to victories in NASCAR, Formula 1, ARCA, GT3, and the FIA World Rally Championship, and have served as original equipment for AMG and other respected performance vehicle manufacturers. The ERS XT Barrel Spring line is available across a wide range of spring rates and lengths to suit virtually any circle track suspension build — from entry-level dirt cars to professional pavement racing programs.