Xray 308275 XRAY 4s spring-set c = 2.5 2. This is an optional XRAY 4S Spring Set Progressive C, and is intended for use with the XRAY T4 1/10 scale electric touring car. These springs can be used on the front or rear shocks. Effects of Shock Spring Changes Shock Spring Characteristic Softer Increased Chassis Roll Increased Traction Better in Bumpy Conditions More Likely to Bottom Out Stiffer Decreased Chassis Roll Decreased Traction Increased Responsiveness
