The oldest thing on my scooter would be my 'Ride' (vex, same thing) bars.. they av lasted forever after being reinforced, its almost their 1 year birthday lol
It would be my madd break and all, buuut i kinda bent it doing frontflip lol.
or my headtube lasted a while too, but my FSA broke and i couldent be bothered to hammer it out and put a new headset in.. soo i just changed headtubes lol.
and i hcange axles all time time since i strip them a lot.