I am looking for a single hole spray bar needle valve set up for an older Fox 19 and Fox 25 engine, a set up like Super Tiger, already sent a message to Randy Smith thanks
I am not aware of any "infinite adjustment" types smaller than the usual ST .157" (4mm) diameter types, which are presumably much too large. The older 15/20/25 baffle-piston OS engines had a much smaller spraybar than the current .137 (3.5 mm) OS FP/LA type, or the Enya copy, with click-stops, of course. I will have to measure that one when I get home - but I am not aware of any source of those types.
I am also not sure what the original Fox types for the 19 or 25 were, maybe 1/8" (.125)? The older OS 15 types (baffle-piston) were around that.
I would guess the only one easily available now is the Enya copy of the OS FP.
Brett