from haro
- The three models were designed for the developing specialisation of Freestyle back then - the Master was more suitable for ground tricks (known as Flatland today), the Sport was slightly longer and was more of a ramp/park/bowl bike (think Mike Dominguez and Brian Blyther) while the FST (which stood for Freestyle, Street, Park) was as the name suggests, a do-it-all solution.
sorry, but its Freestyle, Street, Track...FST. Not known as FSP are they? look up the haro catalogues online for full details and changes from year to year.
the invert was the lowest end 88 freestyler, then fst/fsx. all entry level, sport and master were the proper article.
fst/fsx had rear platforms by 1988. invert didnt. shorter than the sport, not full cro moly either . fst/fsx/invert have same geometry.
only sport and master were full cromoly. the earlier fst 84 and 85 were full cromoly, then went to trimoly (three tubes cromoly, rest hi-ten)