they come as a pair, fronts or rears..make sure you fill the oil correctly. if you leave the shaft all the way down when filling it, then gently push it up and rotate it at the same time. you will see little air bubbles slowly coming to the surface. do this a couple of times to get the bubbles out. dont forget, you get less response from the shock if you leave the shock shaft all the way down, so by leaving it half way up when screwing the shock cap back on, you will get a better rebound from the shock when the spring is put in place....