Ultimate-match front side coil shock springs for pan vehicle front side suspension system with 4mm master pin axle offer an additional array of choices to fine-tune your car or truck. Powder color-coded for quick & effortless identification. Silver color. Group of 2. Developed through substantial screening and rushing experience. Stiffness is managed by the thickness for the wire as well as by the amount of coils; softer springs have actually a lesser "C" value, while stiffer springs have a higher "C" value.