Eibach ERS Coilover Main Spring 14in x 3.75in 550 lbs

Eibach ERS Coilover Main Spring — 14.00 in x 3.75 in x 550 lb Brand: Eibach Upgrade ride control and handling with the Eibach ERS Coilover Main Spring . Precisely engineered for coilover applications, this 14.00" length, 3.75" diameter spring delivers consistent performance and reliable support at 550 lbs rate. Key Features Length: 14.00 inches — optimized for a wide range of coilover setups Diameter: 3.75 inches — fits many popular spring perches and isolators Rate: 550 lbs — firm, track-ready spring rate for reduced body roll and sharper response Quality: Manufactured by Eibach for precise tolerances and long-term durability Compatibility: Designed for coilover conversion and custom suspension builds Why Choose Eibach ERS This spring is ideal for enthusiasts seeking improved cornering stability and predictable suspension behavior. Eibach’s ERS line offers repeatable performance, excellent fatigue life, and consistent ride height under load — making it a top choice for street performance and competition use. Note: Verify fitment with your coilover assembly and vehicle specifications before installation.