New modern springs marked 3.74.7 are soft at the start of the compression (like hardness 3.7) but become much harder once the springtime is compressed more at the center, with hardness 4.7 at the end. Pearl-grey color and laser engraved for effortless identification. Pair of 2.
Available as a pair, the springs are individually calculated, controlled, inspected and matched to offer identical damping characteristics. Throughout the selection process, each spring is compressed in several fine increments therefore the values are recorded. Each springtime will be matched with another spring of identical traits. XRAY goes the excess mile to ensure perfect spring match-ups, providing your car or truck the predictability and persistence you need to assist you to lead the pack.
