Originally Posted by Jhill

Well already ordered my powertrix and with the overwhelming positive reviews I think I'll be ok, just have to hope I can take the spring rates.

Question for those that have done the install, are the rear springs fully relaxed once if the ground or do you need to slowly lower the arm with a jack or pole jack? If needing to slowly lower the arm can it be done with just usual jack height of car (meaning there is enough swing room of the arm to get the spring out before hitting the concrete).