i just replaced mine with some off a trooper (but I cut them in half to give a less jarring ride)

the ones i removed from my VX were in much worse shape than the replacements off the trooper, which is odd since the trooper was like 6 years older.. and had almost 200k on it. the ones i pulled off my vx seemed to be cracking at the top of the lower "loop" I'm guessing the VX rode on them pretty hard, which now has me thinking my springs are going to get more abuse.. might just order a new set. the other thing i noticed is the ones off the VX seem harder than the ones i took from the trooper