Eibach 0700.250.0400 ERS 7" x 2.5" ID 400 lb/in Coilover Spring Single Red

Vehicle Fitment

• Universal - fits any coilover shock or suspension system with a 2.500 in. (63.5mm) inside diameter spring perch
• Compatible with 2.000 in. (50mm) outside diameter coilover shock bodies as a direct drop-in replacement or upgrade spring
• Suitable for road racing, autocross, time attack, drag racing, rally, and high-performance street coilover applications

Fitment Notes

• Confirm your coilover's spring perch diameter matches the 2.500 in. (63.5mm) inside diameter before ordering - this is the most critical fitment dimension
• Verify that a 7.000 in. free length is appropriate for your coilover's travel range and desired ride height
• Sold individually - order two for a complete front or rear axle replacement
• Eibach does not guarantee suitability for specific vehicle applications not listed; consult your coilover manufacturer or suspension tuner for spring rate selection

Features

• Manufactured from Eibach's proprietary Hi-Ten spring steel alloy for unmatched fatigue resistance and long service life
• CNC precision winding process delivers the highest linearity and consistency in spring rate across the full travel range
• Each spring is individually tested and certified to its stated rate - guaranteed within tight tolerances
• Maximum travel in combination with one of the smallest block heights available in its class
• Ultra-lightweight design minimizes unsprung mass for faster wheel response and improved handling
• Powder-coated red finish with corrosion-resistant surface treatment for protection in race and all-weather environments
• Trusted by top professional race programs including F1, WRC, Le Mans, and NASCAR
• Linear spring characteristic for predictable, tuneable suspension behavior across all driving conditions

Specifications

• Part Number: 0700.250.0400
• Free Length: 7.000 in. (178mm)
• Inside Diameter: 2.500 in. (63.5mm)
• Spring Rate: 400 lbs/in. (7.14 kg/mm)
• Block Height: 2.830 in. (71mm)
• Spring Travel: 4.170 in. (106mm)
• Load at Block Height: 1,668 lbs
• Color: Red Powdercoat
• Weight: 3.4 lbs
• Quantity: Sold Individually (each)

Included Components

• 1x Eibach ERS Coilover Spring (7.000 in. x 2.500 in. ID x 400 lbs/in.)

Product Description

The Eibach 0700.250.0400 is a 7-inch, 400 lb/in. coilover spring from Eibach's ERS (Eibach Race Spring) line - the same spring system trusted by factory-backed teams in Formula 1, WRC, Le Mans, and NASCAR. Measuring 7.000 inches in free length with a 2.500-inch inside diameter, this spring is a direct-fit replacement or performance upgrade for any coilover shock accepting that spring perch size. The 400 lb/in. rate positions it as a firm, performance-oriented setup well suited to road racing, autocross, time attack, and high-grip track applications, though it is equally adaptable to purpose-built performance street builds.

Eibach produces these springs from their proprietary Hi-Ten spring steel using CNC precision winding, with every spring individually tested and certified to its stated rate. The result is exceptional consistency and linearity - the spring behaves the same at the beginning, middle, and end of travel, which is critical for repeatable suspension tuning. The powder-coated red finish provides corrosion protection without adding appreciable weight. Order two for a complete axle set, or mix with other ERS rates and lengths for corner-by-corner tuning flexibility.