I would guess it's for a 1st gen track/kick because they've been around longer and more stuff has been developed for them; however it looks like it would fit a 2nd gen track/vit as well. not sure though. THe only difference I've noticed in the frames of both is the front part.. middle and back of the frame seem the same to me but I haven't done much comparing of anything but the front ends of those frames
I bent my front cross member.. too bad I can't bolt a new one on... it's integrated into the frame... oh well, didn't bother it other than looks