ya, that's exactly why i wanted them! i was gonna get coilovers, but i think cylinders would work so much better, plus they definately get so much attention. and the little pssssss sound, that's great...but maybe that's just me
anyways to answer your questions 4jacks: no they're not hydros..those are the lowriders, and they run on oil. those things are messy. cool for competitions, but not for me. they run off of the battery i'm not sure if that's what u mean. but they basically just use air. u have a compressor full of air, the air runs through the valves to fill up your cylinders...which allows you to move your car with the hit of a switch. i hope i explained that right. it's cool cause it's so easy to lift your car up to go over those darn speed bumps, then drop it back down as low as you want. and there are usually about 10 switches, at least that's how many i'll have. i think it's: 2 for side to side/2 for front to back/1 for each corner/i can't think of what the other 2 are for. hey i'm still learning about all this too...and i'm sure once i get them i'll be an expert

well maybe not, but i'll sure know more!!