I have seen some bikes with a rear seat handle on them. Where would I find one of these to fit my 02 F4i 600?

 

the 04+ models come with them. i have an 05, and an 02 track bike. i looked at the 02 and the 02 subframe lacks the mounting point for the grab bar. the subframe is several inches below where the plastic is. a raised portion with threaded holes would need to be attached to the subframe.

you can sometimes find used ones on ebay for less than $25.