XREAS shocks are MONO-tube shocks and thus, are high-pressured shocks. They should (in theory) last the life of your 4runner or for a very long time. They are more efficient in damping the ride, but they are significantly firmer than regular low-pressure twin-tube shocks (found on non-XREAS 4runners).
XREAS shocks are cross-linked: left front shock to right rear shock; right front shock to left rear shock. Thus, "X-shaped."
XREAS is a closed-circuit system; thus, you cannot replace just one shock. You also need to replace the other shock that it is connected to.
XREAS is very good for cornering on-road (it's MAIN purpose)...helps to reduce body roll. As you take a corner, the 4runner will rock towards the outside. XREAS senses this and hydraulically pumps more fluid to the outside shocks (by drawing from the inside shocks) in an X-pattern. This helps firm up the outside shocks, and softening the inside shocks. Thus, you have less body roll because the outside shocks are pushing against the body lean.
In off-roading?? XREAS probably won't do much in off-roading. However, because it has MONOtube shocks (high-pressure, quicker reacting), XREAS suspension is more efficient in controlling your 4Runner body motions over bad terrain. Since monotubes are more efficient, you have less chance of shock fading/overheating. HOWEVER, monotubes are more fragile than twin-tube shocks...therefore, if a rock hits it, then it will have a higher chance of damage.
XREAS came standard on all Sport Edition (hood scoop) models and optional on Limited models.
Linear Mode
