This is an optional Pair of Traxxas X-Maxx GTX Shock Springs (1.538 Rate).
Long GTX™ shock springs are offered in different rates to tune your X-Maxx® suspension performance or compensate for lighter or heavier vehicle configurations. The higher the spring rate number, the firmer the spring. (1.538 rate red stripe) (1 pair) The standard X-Maxx spring rate is 1.055.
