BC Racing Coilover Spring (V-Barrel) - 100mm IDUpgrade your suspension with BC Racing 100mm I. D. V Barrel Springs, designed for superior performance, comfort, and handling. Unlike traditional linear springs, V barrel springs feature a variable spring rate that provides a progressive feel, improving both ride quality and cornering stability. Made from SAE9254 high tensile steel, these springs are engineered for durability and longevity. A zinc undercoating** and outer powder coating protect